The simple pattern
ENERGY -- FORCE -- ENERGY -- FORCE -- ENERGY -- FORCE -- ENERGY.......
Start by reviewing the week 6 notes online (this is a mandatory part of the assignment).
Watch the OK Go! video (http://www.youtube.com/watch?v=qybUFnY7Y8w) and find examples for the following six concepts. BE SPECIFIC and briefly explain why your examples demonstrate the concepts.
Static FrictionKinetic Friction
Work
Gravitational Potential Energy
Elastic Potential Energy
Kinetic Energy
when the toy car is held stationary and then is pushed into the dominoes that is an example of work because the guy initiated the force by putting in work toward a horizontal vector which made the car knock over the dominoes and transferring energy. When the dominoes are finished and pulls the string letting the car roll down the track is a gravitational potential energy because before the dominoes it wasnt moving and after the gravity had pulled it down. Elastic potential energy is shown when the metal marbles activate the golf club which was held back but was then shot forward because of the elasticity. Kinetic friction is evident through the lego car's motion as it is not rapid because the little microscopic imperfections are gliding over each other and causing a little resistance. Static friction is evident when the big car is stationary because the little microscopic imperfections are interlocked together before gravity can move them even a little. Kinetic energy is when the guitar was given a force and kept going in circles with its kinetic energy.
ReplyDeleteStatic Friction-An example of static friction is the bucket on the ground because it is held in place by it's surface being settled into the tiny imperfections in the ground. It would take more work to move that bucket from how it is, in one place, than it would to move the bucket if it were already in motion.
ReplyDeleteKinetic Friction- an example of kinetic friction is the marbles rolling in the wooden track because they have some resistance as they roll down; however, they are all still moving.
Work- The singer puts in work when he pushes the red car into the dominoes. His work gave energy to the car so that it could roll on the table.
Gravitational Potential Energy- The tire at the top of the ramp that rolls down has gravitational potential energy because it is pulled in down by gravity when released by the stick that was hit by the tennis ball. Once the tire reaches the ground, it will have no more gravitational potential energy because it can no longer go down anymore.
Elastic Potential Energy- when the lego car hits the gate and causes the rubber band/string to tighten, you can tell there was elastic potential energy because of how fast the string snapped tight and it bounced when its energy was released.
Kinetic Energy- kinetic energy is demonstrated countless times in this music video. whenever an object is moving on its own after it's been pushed by an outside force (without impacting another object) it has kinetic energy.
Static Friction: The glass cups resting on the tables that are then "played" by spoons with a moving electric guitar have static friction because they rest on the table, without slipping around, because of this force. This force's objective is to make things stay in place because of micro "imperfections"
ReplyDeleteKinetic Friction: When the barrel runs down its slope, kinetic friction is present. This kinetic friction between the splinter-ey, rough wood and its slope keeps the heavy barrel from rolling endlessly around.
Work: Work is done when a force is applied. At the beginning of the video, the car is moved by a force doing work on it (a hand moving the car). But as soon as that hand lets go, work is no longer being applied to the car, even though the car may still move a little.
Gravitational Potential Energy: The piano waiting to fall has LOTS of gravitational potential energy because it's SO heavy that gravity REALLY wants to bring it down! This gravitational potential energy is an "accident waiting to happen," as all gravitational potential energy.
Elastic Potential Energy: When the man in red at the beginning of the video pulls his goggles over his head, the elastic potential energy lies in the elastic band on the goggles being pulled back, which has "potential" to then snap when released.
Kinetic Energy: The billiards ball rolling down the wooden slope has kinetic energy because it is moving. Kinetic energy is NOT a force, but it is measured in joules, which means it takes up energy to perform a task.
Static Friction is when the imperfections and microscopic ridges of two surfaces become intertwined and gravity plays its part in keeping these two surfaces together. Static friction consists of a lot of resistance in which there is no horizontal vector, therefore causing the two surfaces to create a stronger bond with more contact. When the marbles are standing still on the track they have a lot of static friction because they had been sitting in that stationary position for quite some time, which allowed gravity to work on them and the tiny imperfections from the marble created a lot of contact with the imperfections of the track.
ReplyDeleteKinetic Friction is when two surfaces are still touching; however, there is less contact than static friction because there is more of a horizontal vector, therefore allowing for less gravitational pull. Although the microscopic imperfections are still in contact, there is less contact than static friction, which allows for the two surfaces to move easier across one another. Kinetic friction plays its part when the tire is rolling down the track. The ridges and imperfections from the tire create friction with the track causing it to still move; however, this friction keeps it from rolling on forever.
Work is when a force is applied, which then transfers energy. It is a change in the energy, and the force is being applied over a distance. Work is the measure of change after a force is applied. The man pushes the red car in the beginning. He applies the force and transfers the energy from his arm into the little red car, which then exerts the energy and causes the car to move and knock down all of the dominoes.
Gravitational Potential Energy is how much energy exists in an object due to the vertical vector being applied, also known as gravity. Gravity always pushed down on objects, wanting them to move towards the floor. When an object is lifted off of the floor, gravitational potential energy exists because at any point the object may be released causing it to go straight back down to the ground. Gravitational potential energy exists when the ball finally makes it into the basketball hoop. Because the ball is lifted off of the ground, gravitational potential energy is doing its job in wanting the ball to ultimately fall to the ground; moreover, after it is no longer supported by those two metal rods in falls down into the basket because anything that goes up must come down and gravity is working on the ball to bring it down.
Elastic Potential Energy is the energy that exists in elastic materials. Items that stretch and compress (i.e.; a rubber band or spring) store elastic potential energy because they can grow in their length and then be released which also releases the stored energy. In the video this is seen when the man puts on his goggles. He stretches the elastic band around his goggles, which increases the stored energy until he places the goggles on his face, which compresses the band a little more, therefore releasing some of that stored elastic potential energy.
Kinetic Energy is moving energy. It is strongly impacted by the velocity of an object because in the equation (KE=1/2m(v^2)) velocity holds the most importance since it is squared. If you double the velocity, it quadruples the kinetic energy; however, if you double the mass, you only double the kinetic energy. Kinetic energy applies when the soccer ball is rolling while being supported by two rods of metal. The object was in motion and there was energy present because it was moving.
When the dominoes were STATIC(STILL), they were hit by a car which was handled by the first guy. He used FORCE to hit the car against the dominoes to cause a chain reaction which created a constant KINETIC ENERGY which was transferred from object to object. When the silver balls rolled down the wooden slide, each filling a hole on the surface, the KINETIC FRICTION of the smooth surface against another smooth surface. When the piano was hanging on the rope, the GRAVITATIONAL POTENTIAL ENERGY produced from the weight of the piano against the weight of the rope caused the piano to "want" to go down to the floor resisting against the rope holding it up. When the bowling ball was rolling pass the four man singing group, there was ELASTIC POTENTIAL ENERGY when each painting shot up into the air before the ball hit it. I believe that that is all six of them.
ReplyDeleteStatic Friction-The red toy car at the beginning has static friction because the microscopic irregularities of the concrete surface and the rubber tire have settled into each other, thus preventing the car from moving unless a greater force is applied. It takes the force of his hand to overcome the static friction and move the car.
ReplyDeleteKinetic Friction-The giant tire that rolls is an example of Kinetic Friction, because it takes far less energy for the tire to keep moving over the surface then for it to move from a stationary state. As the tire picks of speed, it only becomes easier as the tire glides over the microscopic imperfections.
Work-In a sense, the whole video/contraption is an example of work. When he pushes the red car, he is doing work; However, while the car knocks down dominoes that then trigger a massive chain reaction, he is no longer doing work. So in total, the video is just a small amount of force drawn out over a super long distance to complete a simple task.
Gravitational Potential Energy: The piano has gravitational potential energy in reference to the ground because It's held up on rope, has significant mass and is high above the ground.
Elastic Potential Energy-The TV after the screen is smashed. It has Elastic Potential Energy because after the screen was smashed, the TV rocked back and forth without a new force being applied to it.
Kinetic Energy-The lego car is an example of kinetic energy simply because it is in motion, therefore having mass and velocity.
Static Friction: The dominos standing still are an example of static friction because the microscopic ridges of both the dominos and the table interact making the dominos stand still.
ReplyDeleteKinetic Friction: The tire rolling is an example of kinetic energy because the ridges on the tire and the surface slows down the tire's descent but it does not immediately stop the tire because of gravity.
Work: The toy car is an example of work because the man applies force to the car and the transferred energy then moves the car forward.
GPE: The piano's heavy weight is being pulled down to the ground because of gravity.
EPE: The elastic band on the man's goggles are an example of elastic potential energy because he uses the elastic energy to stretch is goggles then releases the elastic after covering his eyes.
Kinetic Energy: The bowling ball rolling down is an example of kinetic energy because it is pushed by an outside force and continues moving downward.
Static Friction-An example of static friction in the Ok, Go video would be either when the guy is sitting in the chair at the beginning or when he pushes the toy car against the cement and into the dominos. These actions are static friction because they are forces that resists the movement of two touching objects.
ReplyDeleteKinetic Friction- This is found in many actions in the video. One specific example would be when the pool ball is rolling down the pole, or when the small metal balls role through the wooden tubes and trails. These are examples of kinetic friction because they are motions that are relative to each other, and rub against one another.
Work- A lot of the objects in the video are doing work, but one of the only times where an actual human is doing work is when he pushes the toy car at the start of the video. This would be work because he applied a force to an object, and the object then reacted to cause a displacement.
Gravitational Potential Energy- In order to have gravitational potential energy, there must be height in the objects relativity to another object. There were many examples of this potential energy in the video, including when the soccer ball rolls off the two pipes and knocks down the piano. There is height between the soccer ball and the floor, as well as the piano and the floor, which means that there is gravitational potential energy.
Elastic Potential Energy- There is elastic potential energy when the people and objects are on the zip lines. Elasticity is necessary because it is keeping the objects/people from touching the ground or falling. The more stretch of the elastic, the more energy is stored in it.
Kinetic Energy- This energy is simply an object in motion, as opposed to kinetic friction, which are two objects in motion relative to each other. Almost every single action in the video is displaying kinetic energy. For example, when the hammer it’s the television screen, or when the balls roll on the bars. These are all objects in motion and are classified as kinetic energy.
Static Friction: The car in the beginning of the video has static friction because the imperfections in the car and the road have settled, and there needs to be an outside force. Such an outside force would get rid of the static friction.
ReplyDeleteKinetic Friction: Kinetic Friction plays a part when the tire is rolling down the road. This is because the road and the tire are making contact, but not as much as the static friction when stopped, therefore making it Kinetic friction
Work: Work is the piece of equipment or object that is being applied a force to.
Gravitational PE: The piano is an example of gravitational pe because gravity is constantly pulling the piano down to the ground and once let go, will fall to the ground until it has reached maximum velocity.
Elastic PE: A rubber band or any band is an example of elastic potential because if pulled, there will be a force if let go from one of the sides.
Kinetic Energy: An example is the car when a force is not being created. When the car is just coasting, it is only potential energy that is carrying it.
Static Friction is when the grooves and imperfections of a surface are being held tight and cannot move as freely as usual. An example of static friction in this video would be when the marbles are staying still on the track mixed with the imperfection of the track held it tightly close which restricted a lot of movement.
ReplyDeleteKinetic Friction is when the two surfaces are touching but they are in less contact with surface area therefore not held in so tight which allows for more movement. An example of kinetic friction would be when the ball is rolling towards the bullseye. The smoothness of the ball mixed with less contact with the ground creates less friction causing the ball to spin faster and grow exponentially therefore being kinetic.
Work is when you use your energy and transfer it through something and it creates force over a specific distance. An example of work would be at the very beginning when the guy pushed the car to make the dominoes fall. He applied a force and transferred his energy to the car which then transferred its energy to the dominoes causing them to fall.
Gravitational Potential Energy is how capable the object is of falling vertically and gravity does all the work. An example of GPE is when the piano is held up by the rope off the ground. Gravity has the potential to cause the piano to fall.
Elastic Potential Energy is the energy that compressing or expanding materials have. They hold the potential to grow or shorten in length and size. They have a tendency to go back to their original length once expanded or shortened. When the lego causes the rubber band to snap is an example of EPE because the band expands and then goes back to its original form.
Kinetic Energy is the energy which an object possesses due to its motion. An example of kinetic energy is when the tetherball is rolling to lamp grooves.
Static Friction- When the speaker is turned on the vibrations from the music send the marble, which was originally idle due to static friction acting upon it, off of the speaker.
ReplyDeleteKinetic Friction- When the tire is sent down the track is an example of kinetic friction. As the tire rolls down the track its rubber surface composed of grooves take hold on the surface of the track, causing it to slowly slow down, however this does not occur immediately because there is gravity acting upon it as it descends.
Work- At the beginning of the video the man applied a force to the car which allowed it to move to begin the process of the entire machine. By applying a force to the car the cars tires begin to move, the tires apply a force to the direction behind the car which cause the car to move forward. Once the car hits the dominos it begins the chain reaction that allows the machine to run.
Gravitational Potential Energy- The tea kettle directly after the tire on the track has gravitational potential energy because it is suspended above the ground. Gravity is acting upon it at all times and if it were to move slightly from its current position gravity would act upon it causing it to fall to the ground. This would occur to the tea kettle if it was not suspended by the string, however, it does fall just not all the way to the ground.
Elastic Potential Energy- When the man is attached to the bungee chord the elastic band it stretched out which causes elastic potential energy. If the strain on the chord was released, the potential energy would turn into kinetic energy as the man moved backwards. This occurs when the globe releases this strain and the man moves backwards.
Kinetic Energy- Kinetic energy is seen at the very beginning of the video when the dominos make contact with the pool ball which sends it down the track to the floor, the ball is able to move in a specific direction because it has this kinetic energy which was started by an outside force (the domino) applied to the ball.
Static Friction- An example of static friction is the marbles on the track because they have been staying still and the ridges on the marbles and the ridges of the track have been creating static friction.
ReplyDeleteKinetic Friction- The giant rolling tire is an example of Kinetic Friction, because it takes a lot less energy for the tire to keeping moving, and as it gains speed and momentum it only gets easier for the tire to move.
Work- While the whole video is an example of work, one example is when the guy at the beginning applied force to the car and pushed it forward into the dominos. Without apply a force or adding work the whole machine would never have worked.
Gravitational Potential Energy- An example of Gravitational Potential Energy is the piano, gravity is pulling the piano down but it being held up by force, but once the piano is released all the energy comes down with it and it will fall to the ground at maximum velocity.
Elastic Potential Energy- When the guy is attached to the cord the band is stretched out which causes greater potential energy, however when the strain on the cord is released the moves and his energy becomes kinetic.
Kinetic Energy- Kinetic energy is showed all the time in this video, any time an object is moving on its own without any outside force, it has kinetic energy which helps it move forward.
Static friction- When the bucket is on the floor is has static friction because it is in place due to the microscopic ridges in both surfaces, that keep it from moving around. It takes more work to move the bucket in its resting position because it is deeply settled into the ridges in the ground, but if it were in motion it would be easier because it wouldn’t be as deeply intertwine into the ground. It would be higher on the surface.
ReplyDeleteKinetic friction- An example of this is when the marbles are rolling on the engraved track because the surface of the marbles and the table are rubbing against each other, therefore, their uneven surfaces have friction, but because the marbles are moving the surfaces only touch the top of the ridges because they don’t have time to settle in deeper.
Work- When the man applied force to the car, which gave it the energy to move. With the force, the car’s tires were directed in an angle to allow the car to move forward when force was applied. This is work because it achieved something. It began the whole process in this video.
Gravitational potential energy- An example of this is when the piano falls to the ground due to the force of gravity. It is not still, but moving therefore it is potential.
Elastic potential energy- When the Lego makes the rubber band snap because the rubber band increases in length then decreases to its original form, which shows that it is elastic.
Kinetic energy-When the ball is rolling down the wooden half pipe that is kinetic energy because it is energy by virtue of being in motion. The object is moving on its own due to the force of gravity that is parallel.
When the man applied force to the car, which gave it the energy to move. With the force, the car’s tires were directed in an angle to allow the car to move forward when force was applied. This is work because it achieved something. It began the whole process in this video.
Static Friction
ReplyDeleteThe toy car being pushed across the cement at the beginning of the video is an example, because it shows the resistance of two moving objects
Kinetic Friction
The rolling tire is an example, because the grooves on the tire and the microscopic imperfections on the surface slow down the tire, but gravity is stronger.
Work
When the man was pushing the car at the beginning of the video, it was an example of work. Work is force applied over a distance, he didn't just push it and let go, and he kept pushing, so he was doing all the work.
Gravitational Potential Energy
The piano falling at 1:34 was an example of Gravitational Potential Energy, because the force being acted upon it was gravitational force
Elastic Potential Energy
The blue guy getting flung back at 2:50 shows Elastic Potential Energy, because he is at a rest position, but an elastic force is applied to him and he goes flying back at the stack of boxes.
Kinetic Energy
The Giant metal ball rolling down the slide is an example of kinetic energy, because the ball is given a force from its static position, and keeps on accelerating.
STATIC FRICTION: At the beginning of the Ok Go video, the little toy car has static friction because the flaws in the car and the solid counter have steadied, accompanied by an outside force to take away static friction.
ReplyDeleteKINETIC FRICTION: When the small metal marbles roll through the indented trails on the large plank of wood, they are exemplifying friction because their motion is relative to one another, and eventually touch and cross paths.
WORK: An example of work is when the man applies a force to the toy car and moves it forward, causing it to collide with the dominos. If the man at the beginning hadn’t have applied this small amount of work, the entire video would have been utterly unsuccessful.
GRAVITATIONAL POTENTIAL ENERGY: The large piano falling down to the ground is a great example of gravitational potential energy. While it is hanging in the air, it has potential energy, which is being determined by gravity.
ELASTIC POTENTIAL ENERGY: In the beginning of the video, when the man puts on his protective goggles, there is elastic potential energy laying within the band/ strap of his goggles. This energy has the potential to snap back when he releases the strap.
KINETIC ENERGY: When the ball rolls into the target that is kinetic energy because it is an object with energy in motion; it is moving by itself because of the parallel gravitational force.
Static Friction: When the speaker turns on, it vibrates and makes the marble move which kicks off a number of chain reactions. This is static friction because the marble was still, then the vibrations from the speaker caused it to move
ReplyDeleteKinetic Friction: When the marbles move along the indented plank of wood shaped like a hot air baloon, kinetic friction is taking place because their motion is relative to one another and at the end they wind up crossing paths
Work: When the man pushes the car at the beginning of the video, he is applying a force to the car which makes the cars tires move. The tires apply a force behind the car allowing the vehicle to move forward. The car hitting the dominos makes the whole machine start to work.
Gravitational Potential Energy: When the piano falls, this is an example of Gravitational Potential Energy, because the force being acted upon the piano was gravitational force since the piano was falling.
Elastic Potential Energy: The elastic band on the man's goggles is an example of elastic potential energy. This is because he uses the elastic energy of the elastic band to stretch his goggles. Next, he releases the elastic after covering his eyes, further demonstrating elastic potential energy.
Kinetic Energy: Energy is used to make the task of the billiards ball rolling down the wooden slope happen, demonstrating kinetic energy.
Static Friction: At the beginning of the video, the red toy car has static friction because the car and the counter have settled with each other, leading for an outside force to take away the friction by adding energy, in this case the man pushing the car.
ReplyDeleteKinetic Friction: The tire being sent down the track is an example of kinetic friction. When the tire rolls down, the track's rubber surface is made up of grooves resulting into the tire grabbing onto the surface of the track, and going very slowly slowing down.The tire does not stop instantly because the force of gravity impacts its fall.
Work: Work is seen when the man in the beginning applies force to the car, giving the car energy to move. The work allows the rest of the video to occur.
Gravitational Potential Energy: The piano falling down and collapsing to the ground is a really good example of gravitational potential energy in the video. It has potential energy while being held up in the air by the rope and is brought down by gravity.
Elastic Potential Energy: In the video the lego that causes the band to snap is example of elastic potential energy because the band expands and goes back to its original form.
Kinetic Energy: The ball rolling into the target is an example of kinetic energy. The ball is moving by itself because of the gravitational force.
Static Friction: When the red car that the beginning of the video is at rest is an example of static friction because the imperfections of the tires press into the imperfections of the ground causing them to lock between each other, making a lot of resistance till the man pushes the car.
ReplyDeleteKinetic Friction: When the tire rolls down the track the imperfections don't have enough time to be pushed down into the track's imperfections since the tire is moving making there be less resistance.
Work: When the marbles are at rest on the table until one moving marble hits them causing them to move along the grooves, which are craved in the table, is an example of work because work is when an object goes from nonmoving energy to having energy and covering distance after being applied force.
Gravitational Potential Energy: The mannequin hanging towards the end of the video is an example of GPE because gravity wants to pull down all that weight from the mannequin. In conclusion, when the mannequin is hanging it has potential for gravity to take over and make it fall to the ground, which happens when the string hanging it up breaks.
Elastic Potential Energy: Objects, like a spring, that can stretch in length then come back together and compress has EPE so when the man puts on his googles, he stretches the elastic band making there be potential to fling back into its original place.
Kinetic Energy: When an object is moving it has kinetic energy; for example, when the bowling ball in the video was moving down the swirly ramp it posses moving (kinetic energy) since the weight of the bowling ball cause gravity to bring it down the ramp it increased the same amount of speed or at an exponential rate each second it went down the ramp.
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ReplyDeleteStatic Friction: This is when the grooves of a surface are being held tight so that it can’t move freely. The dominoes which stand still before the car hits them, that is an example of static friction because the miniature holes in the dominoes interact with the ridges that are along the table.
ReplyDeleteKinetic Friction: Friction occurs when two objects are moving relative to each other and rub together. One example of Kinetic Friction is the use of the small metal balls. This portrays friction because as they move through the trail along the long piece of wood, they are becoming relative to one another. The metals balls also eventually touch and cross paths.
Work: This is when ones force is used or transferred to another object. The main example of work was depicted in the very beginning of the video. The red man applied force to the car which began the chain of interactions. He used his own force and energy in order to transfer more energy into the car.
Gravitational Potential Energy: Gravitational Potential Energy is the energy an object possesses because of its position in a gravitational field. The best example of GPE is when the piano that was held by the rope falls on the floor. Due to the mass and gravitational pull the piano had potential to fall and it did.
Elastic Potential Energy: This is potential energy stored as a result of deformation of an elastic object. One example of is the lego which causes the rubber band to expand into a deformation of what it was before. Although, after it returns back to its original form which is why it is elastic energy.
Kinetic Energy: Kinetic Energy is the energy an object possesses due to the motion that object has. The tire rolling down the little path is a demonstration of kinetic energy. The tire began moving in the reaction and continued its forward motion until it was stopped. That is why the tire is a good depiction of Kinetic Energy.
Static Friction: At the beginning of the video, the dominos, before being knocked over, are examples of static friction. They are stationary objects being forced onto the desk by gravity. Since they are still and gravity is pushing down on them, the micro-irregularities and ridges of the dominos and the micro-irregularities and ridges of the desk intertwine and will not disconnect unless some outside force is applied to the dominos to overcome the static friction, which in this video is the red car.
ReplyDeleteKinetic Friction: An example of kinetic friction is when the red car at the beginning of the video is rolling, As the red car moves forward and as gravity forces it down, the mice-irregularities of the car's tires and the micro-irregularites of the desk bump into each other and each little bump and rub slows the car down until it eventually stops. However the two surfaces have less contact with each other than if they were static because the car is moving forward and so gravity has less time to push the grooves into each other and so there is less resistance.
Work: At the beginning if the video, when the man applied force to car, he demonstrated an example of work. The equation for work is: Work= Force x Distance. The man, using the force of his hand, pushed the car forward over a certain amount of distance to accomplish his goal-- to knock the dominos over to start the chain reaction.
Gravitational Potential energy: Before it falls and smashes to pieces, the piano hanging from the rope is an example of gravitational potential energy. While suspended in the air, it has gravitational potential energy to the ground. Because the rope is holding it up and even though it has potential to fall, the piano is being prevented by the rope from gravity forcing it down. However, if the rope were to snap, the piano would fall and transfer the potential energy to kinetic energy.
Elastic Potential Energy: The man at the beginning of the video putting on his goggles is an example of elastic potential energy. If he were to pull on the goggles and instead of gently letting them back to his face, just let go when it was fully extended, it would have snapped back at him. It would have snapped back at him without him applying a new force to it.
Kinetic Energy: Toward the middle of the video, the bowling ball rolling on the floor is an example of kinetic energy. Although it initially started moving because of a force, the force transferred energy to the bowling ball and kept it moving even as there was no force being applied to it. This motion with the absence of a force is an example of kinetic energy; kinetic energy is not a force.
Static Friction: During the first part of the video, a fan moves an umbrella, which was at rest, across the floor. The umbrella's microscopic imperfections were linked with the grounds microscopic imperfections. The umbrella's imperfections had sunken farther because it was at rest. The fan had to have enough force so that it would be able to separate the linked imperfections and move the umbrella to initiate the next step in the contraption.
ReplyDeleteKinetic Friction: A lego car was let down a slight ramp so that it could gain some speed. The microscopic imperfections of both the lego car and the ground linked, but not as much as if the car were at rest. The car would eventually stop because gravity weighs down the car and the imperfections would sink deeper into the imperfections of the ground. Kinetic Friction takes less force to overcome because the car is already moving over the imperfections in the ground.
Work: At the very start of the video, the man pushes the toy car into the dominos. He exerted his energy into moving the car, which creates a force, which then starts the chain reaction of events. This is the only time in the video that actual work is being done by man.
Gravitational Potential Energy: Near the beginning, a tube of some sort rolls and falls onto a piece of cloth, which then pulls a bat out from under a can which is attached to a string. The can had potential energy. PE=mass*gravity*height. The can had a certain weight to it, which affected how fast it would fall. The height also has an affect on the can as well. If there was no height, there would be nowhere for the can to fall. The can had potential energy because it had a height, mass, and had the ability to fall. When the bat was taken from beneath it, the can fell, pulling on a string which triggered the next step. The can had the potential energy while waiting on the bat.
Elastic Potential Energy: The man in the beginning has on goggles with an elastic band. When he stretches the goggles out in front of him, the band stretches out of its original form. When he lets go, the goggles snap back to his head because the band has EPE. The band wants to go back to its original form. The elastic band had energy stored in it when the man exerted a force to stretch the band out, which then gets turned back into energy when the band snaps back.
Kinetic Energy: After the car rolls backwards, it triggers the bowling ball to spiral down and roll across the floor. The energy in the bowling ball kept it rolling across the floor, which then hit the target to start the next step. The kinetic energy overcame the friction of the bowling ball and the floor so that the ball could keep moving.
Static Friction is when the imperfections of each surface combine more, causing the force normal to push against the grooves of the surfaces, thus resisting motion. An example of static friction in the video is when the dominos are standing still. This is static friction because the microscopic imperfections of the two surfaces allow the dominos to remain standing.
ReplyDeleteKinetic Friction is when the imperfections of each surface do not combine creating less contact; therefore, causing less force normal to push against the grooves, allowing the surfaces to glide over each other. Kinetic Friction is shown toward the beginning of the video when the metal ball in rolling down the wooden path. This is kinetic friction because the imperfections of the two surfaces are in less contact, allowing the metal ball to roll down the path easily.
Work is what you accomplish. Work is demonstrated in this video in the very beginning when the man pushes the car. This is an example of work because the mans force is transferred to the car, which hits the dominos starting the whole chain reaction of energy to force.
Gravitational Potential Energy is energy stored in an object and how much vertical vector is playing against it (gravity), waiting to act upon the object to bring it down. An example of GPE is when the piano is being held up by rope. This is an example of GPE because the piano has so much vertical vector acting upon, but the ropes are keeping the vertical vector (gravity) from causing the piano to fall straight down. However, when the ropes detach, gravity forces the piano to fall straight down.
Elastic Potential Energy is energy that can stretch and compress, but by doing so can go back to its original shape after compressing or stretching. An example of EPE is when the man was attached to the bungee cord. This is an example of EPE because the bungee cord is stretched out, and once it is released by a force acting upon it, it goes back to it’s original size, and by doing this pulls the man backwards rapidly.
Kinetic Energy is energy produced by an object in motion. An example of Kinetic Energy in the video is when the tire is rolling down the wooden path. This is kinetic energy because the ball remains in motion, and gain more motion when it goes down the ledge. The ball will remain in motion until it is stopped.
STATIC FRICTION is more resistance because when at rest, the microscopic irregularities in the surface of objects settle into each other. It takes more force to get them out, but once they’re moving, they slide over the top of each other, therefore kinetic friction takes less force to overcome. At the very beginning of the video, the red truck is an example of static friction because the truck is at rest and needs an outside force to move.
ReplyDeleteFurthermore, at the beginning of the video, when the red truck is moving, that is an example of KINECTIC FRICTION. The microscopic inequalities are sliding over the top of each other taking less force than static friction because there is a continuation of movement. Kinetic Friction is moving, therefore, the microscopic inequalities in the surface of the object settle into each other LESS than they would settle into each other if the object was stationary (which is static friction).
At the beginning of the video, the guy is doing WORK on the red truck because he is applying force along a distance. Only when the guy is applying force he is doing work, therefore when he stopped applying a force on the red truck, the work stopped. Work is always done by one thing onto another thing, in this case, the guy onto the red truck.
ELASTIC POTENTIAL ENERGY means no input of force to make it happen. At 1:00 in the video, a rubber band is attached onto an orange and yellow pole, the marble falls into the mini drainer and the rubber band is released causing the drain to move around a candleholder (I think that's a candleholder) continuing on the video.
An example of KINETIC ENERGY happens at 1:05 when the car tire roles down the wooden track. Kinetic energy is not a force and no acceleration is needed to find KE, just velocity. Kinetic Energy is when you have energy of motion, so movement.
At 1:34, wires hold up a piano, yet once the ball falls onto the ground, the piano is released. Before the piano is released, it has GRAVITATIONAL POTENTIAL ENERGY to the ground. To have Gravitational Potential Energy you need mass (the piano), height, and gravity, which are all directly proportional to each other.
ReplyDeleteStatic Friction- The car at the beginning of the video has static friction. Microscopic ridges in both the tires and the ground have pressed into each other causing the car to remain at rest until and outside force (the man) moves it.
Kinetic Friction- When the little lego car rolls down the ramp, it is moving much to fast for the imperfections in the tires and the ramp to sink into each other, therefore the car keeps moving because of gravity.
Work- When the man pushed the little red car, he gave it energy by accelerating it forward. When the force was applied it moved a certain distance, which is the formula for work.
Gravitational Potential Energy- An example of GPE is when the balls drop from the net. They gain more and more GPE as they fall towards the ground, and are being pulled by gravity.
Elastic Potential Energy- The little lego car makes the rubber band go back to its original form. The EPE is when the rubber band is fully stretched out and can snap. When it snaps, the energy is released.
Kinetic Energy- The metal ball has kinetic energy because in the way its positioned, it rolls on a surface that has an angle, and the ball creates energy as its moving.
Static Friction: An example of static friction in the video is at the beginning with the red car. The tires of the car and the surface underneath are interlocked within each other. The friction between the two objects makes an outside force necessary to make the car move, which in this case is the man in the video.
ReplyDeleteKinetic Friction: An example of Kinetic energy in the video is when the tire is rolling down the surface. As the tire goes down, it slows down gradually to to the friction between the tire and the surface underneath it. The tire grabs on to the grooves of the surface, making them more connected.
Work: Work is displayed in the video at the very beginning when the man pushes the car. The man applies a force in order for the whole reaction to start.
Gravitational Potential Energy: An example of gravitational potential energy is when the piano is hanging from the rope. Due to its weight and mass, the piano had the potential to the ground. As the piano falls, it is pulled down by gravity.
Elastic Potential Energy: When the man at the beginning of the video is putting on this goggles. In order for him to fit the goggles on his face, he expands the elastic and once it is one, it returns to its normal form.
Kinetic Energy: Kinetic energy is seen in the video when the ball is rolling towards the target because the ball is in motion with energy. Also because of the gravitational pull, the ball is moving by itself.
Static Friction: Static friction occurs when you try to slide two objects past each other, and a small amount of force will result in no motion. The force of friction is greater than the applied force. This is exemplified when the dominoes are still and have no movement. Gravity is pulling them to stay in position.
ReplyDeleteKinetic Friction: Kinetic friction occurs when the force of two objects sliding past each other is so great that it results in the objects moving. This is exemplified when the marble continues to slide down the ramp because there is enough force and friction to cause it to keep moving. The friction allows the marble to continue moving until another force stops it.
Work: Work is a force applied over a distance. In the beginning of the video, the scientist places his hand on a toy car, which he pushes into the dominoes. Work is being applied to the car through the scientist’s hand, but as soon as he removes his hand, work is no longer being applied.
Gravitational Potential Energy: Gravitational Potential Energy is the energy an object possesses because of its position in a gravitational field. The greater the height, the more potential for faster and greater movement. This is the potential for movement. Gravity is always pushing down on objects. When the marble is dropped into the basket from a structure above, the ball contains a lot of GPE at the top that causes it to fall.
Elastic Potential Energy: Elastic Potential Energy is the potential energy stored as a result of an elastic object that is stretched like a spring or rubber band. When the scientist lifts his goggles in the beginning of the video, he is expanding the length of the rubber, and then when he releases it, it returns back to its original shape. There is EPE in the goggle strap and it has the EPE to snap back to its original form.
Kinetic Energy: Kinetic Energy is the energy that an object possesses due to its motion. When the big red ball continues to roll down the ramp, this utilizes its kinetic energy and gravitational pull to keep it moving.
Static Friction: When the dominos are staying still it shows static friction because both the tables and the dominos microscopic ridges intertwine, therefore allowing the dominos to not fall over. Because there is no horizontal vector the bond created by the two surfaces is strong when contact is made.
ReplyDeleteKinetic Friction: The marbles rolling down the wooden ramp show kinetic energy because the wooden material adds some resistance to how the marbles roll down as oppose to it being on a slicker surface and it rolling down with less resistance, therefore rolling down quicker.
Work: Work is the measure of change when force is applied, therefore when the singer pushes the car he is applying force. When he lets go of the car, the car will however continue to move because of the work you already put into it.
Gravitational Potential Energy: Gravity pushes down objects in order for them to move towards the floor. The piano falling has lots of GPE because of how heavy it is and because of its positioning wants to be brought down by gravity.
Elastic Potential Energy: Items that can stretch have more EPE because of their ability to grow longer and release which contains stored energy. The rubber band tightened when the car hit the gate, therefore it shows the EPE because of how quick it tightened and you can see it when the motion is in action.
Kinetic Energy: Kinetic energy is heavily portrayed throughout the whole video because an object moving on its own is kinetic energy. A more specific example would be when the ball rolls down or even when the hammer hits the TV screens.
The entire science behind Rube Goldberg’s contraptions is made up of friction and energy. The Okay-Go video exemplifies static friction, kinetic friction, work, gravitational potential energy, elastic potential energy and kinetic energy.
ReplyDeleteStarting with static friction, the orange bucket in the beginning is staying still the entire time, some what “attaching” to the table. Since the small grooves of the bucket are intertwined with those of the table, the bucket is stationary, undergoing static friction with the table beneath it.
An example of kinetic Friction is when the red pool ball is rolling down the ramp. Since the grooves between the ball and ramp aren’t significantly big, the ball remains in motion, until the end of the ramp acts upon it.
An example of work is when the guy pushes the car. His transfer of energy from his muscles into the car pushes the car forwards. If work=force x distance, the force the guy puts into the car pushes it over a distance, therefore this act is an example of work.
An example of gravitational Potential Energy is the piano being dropped to the floor. Once the weight keeping the piano up was released, gravity acted upon the piano causes it to fall to the ground, where the floor acted another force stopping it’s movement down. The entire time the piano had potential to fall because of the height it already had.
An example of Elastic Potential Energy is the man pulling the goggles over his face. When he stretched them outward all he needed to do was release slightly for them to fling back to his face. The transfer of energy is between his arms through the bands of the goggles.
Lastly, an example of Kinetic Energy is the marbles falling down the board pathway. Once the force of another ball pushed down one marble, the marble gained the energy to move and roll down the pathway. The grooves were no longer instilled within each other between the marble and wood beneath it, causing the marble to go into motion.
Static Friction: An example of static friction is when the red car in the beginning is sitting still. The tiny grooves and ridges in the car's tires and the surface that the car is sitting on are locked into one another, therefore causing the car to sit still until is is acted upon by an outside force.
ReplyDeleteKinetic Friction: An example of kinetic friction occurs when the lego car is pushed down the ramp and continues to roll. An outside force acts upon the car and due to the speed that the car is moving, the grooves are only able to slow down the car, not stop it, until it is acted on by an opposite force.
Work: Work is when a force is applied of a certain amount of distance. An example of this is when the man pushes the car down the ramp, which is applying force against the car for a certain amount of distance.
Gravitational Potential Energy: When the piano is dangling from the rope and elevated off the ground, this is an example of gravitational potential energy because the piano has potential energy to the ground below it.
Elastic Potential Energy: An example of elastic potential energy occurs when the man at the beginning is pulling his goggles over his head. When he stretches the elastic band, the band builds up elastic potential energy.
Kinetic Energy:Kinetic energy is shown when the ball rolls down the ramp. The ball has no kinetic energy when it is sitting still but when it starts to roll, it develops kinetic energy.
Static Friction: An example of static friction is the dominoes in the very beginning. The dominoes are still because the little microscopic grooves on the surface of the dominoes are interlocked with the grooves of the surface they are resting on.
ReplyDeleteKinetic Friction: An example of kinetic friction is the giant steel ball rolling on the ramp towards the end. The friction is causing the ball to push off of the surface causing it to gradually pick up speed as it continues to roll down.
Work: An example of work is in the very beginning when the man does work on the toy car when pushing it forward.
Gravitational Potential Energy: 1:13 An example of this is when the teapot swings from a rope. The teapot is attached to the rope and is being held up by something. When the teapot is released and there is nothing holding it up, gravity begins to act on it causing it to swing.
Elastic Potential Energy: :48 An example of this is when a steel ball is catapulted forwards. A force is pulling the catapult back, when the force is released the catapult is launched forward shooting the ball in the process.
Kinetic Energy: :17 An example of this is the ball rolling down the ramp. The ball is moving as a result of being acted on by other forces, such as gravity.
Static Friction- essentially is an increase in resistance, since microscopic irregularities connect with the surface of that certain object. An example of static friction is the music from the speaker blasting the marble. Ultimately the marble is still until it is pushed by a sound, which pushes it out of the speaker. Moreover, the marble was stuck in the speaker, which had a strong resistance that didn’t allow the marble to leave, until the sound pushed it out.
ReplyDeleteKinetic Friction- Kinetic friction could be scene within the various marbles moving. Moreover, since they’re moving on a horizontal position and still moving, but are encountering a little resistance is kinetic friction. Kinetic Friction is a moment when two surfaces are touching, but static friction is far less since the vector is more horizontal, so there is a lot less gravity involved.
Work- is force times distance, ultimately work is the amount of force needed to be applied to a certain distance, and if there is a much more efficient way of accomplishing it. For example work could be scene in the car since a certain force is being applied to the car, so that it could reach the dominos and knock them down.
Gravitational Potential Energy- is when some object is being elevated over a certain object that is pulling it down, is gravitational potential energy. The piano that is eventually dropped is an example of gravitation potential energy, since it is being held over the ground and the ground is applying a force to bring down the piano.
Elastic Potential Energy- is energy that exists in elastic materials or any object that could stretch, is the elastic potential Energy. When one of the people attached to the elastic band is pulled back is an example of elastic energy, since the energy is stored in an elastic band, and ultimately pulled back to releases that stored energy.
Kinetic Energy- is the energy of motion, so when an object is moving it begins to exhibit kinetic energy in its movements. For example the marble going down the slope is kinetic energy since the marble is moving and applying a force.
Static Friction: A prime example of static friction is the domino scene. The dominoes stay up because their ridges fit with the ridges of the ground. Without this they would constantly move and probably knock each over before the toy car could.
ReplyDeleteKinetic Friction: When the regular sized car is pushed down the ramp near the end the car begins to slow down by its self because of kinetic friction the ridges in the wheels and the ground slowly bump into each other making it more and more work for the car to move until it slowly stops.
Work: Work is applied in the very first scene! Work is everything! When the guy pushes the toy car he must apply force over the distance of the starting spot to the dominoes.
Gravitational Potential Energy: This is seen with the ping pong balls which fall on one of the band members. The balls are held above him until the door for them is released giving gravity free will to pull the balls towards the ground.
Elastic Potential Energy: This can be seen when the metal balls trigger the golf club. The golf club is released and quickly jolts forward to hit the next trigger.
Kinetic Energy: This can be seen in many instances throughout. One example is the tire rolling while it turns on all of the lights. It builds kinetic energy as it starts to roll.
Static Friction: When they push the toy car at the beginning of the video represents static friction. Static fiction is when the microscopic edges of the two surfaces setting in each other creating it harder for a surface to move. Because the toy car was stopped it to more work to push the car then if the car was already moving.
ReplyDeleteKinetic Friction: A good example of kinetic friction is when the tire is rolling. Because the tire has less surface area in contact with the ground, it takes less effort to have it start moving.
Work: Work is force applied over a distance. THe dominos kept falling on each other. The first domino applied work on the second one and thus the secant one fell. This work was transferred through each of the dominos.
Gravitational Potential Energy: Because the piano has so much mass, it also haves a ton of gravitational potential. When the rope breaks it allows gravity to push the piano to the ground. Gravitational Potential Energy works with vertical vectors.
Elastic Potential Energy: One of the most clear examples of Elastic Potential Energy is when the man around the giant rubber-band gets thrown into the wall. The force holding the man from being flung was released thus releasing the elastic potential energy.
Kinetic Energy: Before the bowling ball hits the target, Kinetic Energy is shown. Kinetic Energy is the mass times the acceleration. After the Bowling Ball hit the target the original kinetic energy was lost; however, the balling ball then rolled backwards creating new potential energy.
Static Friction occurs when the grooves and imperfections of a surface are being held tightly together and can’t move as freely as usual. An example of static friction in the video is when the bucket is on the floor. Because its ridges are against the ridges on the floor,it would take more work to move the bucket.
ReplyDeleteKinetic Friction occurs when two surfaces are touching but they are in less contact with a surface area so it is not tight allowing for more movement. The tire being sent down the track is an example of this. When the tire rolls down the track, it’s rubber surface has grooves which makes the tire grab onto the surface of the track. Because it is in contact with the track it goes slows down.
Work is done by one thing onto another thing (what you accomplish). An example of work in this video is in the beginning when the man pushed the car. Because the mans force was transferred to the car that hit the dominos, it started the chain reaction of the rest of the objects.
Gravitational Potential Energy is how capable an object is of falling because of gravity. The piano dangling from the rope above the ground is an example of this. When the piano was released, gravity acted upon the piano causing it to fall.
Elastic potential energy is Potential energy stored because of a deformation of an elastic object. An example of this is when the lego car hits the gate causing the rubber band to tighten. It is elastic potential energy because of how fast the string snapped and bounced when energy is released.
Kinetic energy is the energy that an object has due to its motion or movement; for example, the ball rolling into the target is a perfect example. The ball is moving all by itself because it’s gravitational force.
Static Friction - The red toy car at the beginning of the video has static friction, because the imperfections or ridges in the wheels of the car and the ground have settled into each and need an outside force (like a pushing the car) to move the car.
ReplyDeleteKinetic Friction - An example of Kinetic Friction would be the stripped pool ball. When the ridges in the pool ball and the floor come into contact, the pool ball is moving quickly enough that the ridges do not sink into each other but instead brush by each other allowing the ball to maintain its speed.
Gravitational Potential Energy - The dangling piano has Gravitational Potential Energy. Since the piano is being held above the ground, the piano has the potential energy to the ground and gravity wants to bring it to the ground.
Elastic Potential Energy - Elastic Potential Energy is energy that can be held in anything that can stretch like elastic or rubber bands, for example. An example of Elastic Potential Energy is the artist from OK Go who was attached the rope or cord and shot backwards. This is Elastic Potential Energy because the cord pulled backwards, thus storing the energy and when released the energy pulls the man away from the camera as the cord returns to its non stretched state.
Kinetic Energy - Kinetic Energy is produced by an object in motion. An example from the video would be the tire rolling down the ramp. As the tire gains velocity it produces more energy.
Work - Work is the transfer of a force, so when the lego car hits the small fence it transfers its energy into the fence causing the rope to be pulled.
Static Friction- This is when microscopic irregularities settle into each other’s microscopic groves, in a more resistant and strong hold than kinetic friction. It takes more force to get objects that represent static friction out of each others ridges/ grooves or structure. In the video, the toy car is placed on the floor, causing the groves in the rubber car tire, to settle and match up with the irregularities in the floor. This binding of microscopic imperfections of each material is an example of static friction since neither object is rolling rather they are stationary and still in each other’s grooves.
ReplyDeleteKinetic Friction- The microscopic irregularities in an object are still in contact however they are not touching as much as the grooves and ridges are in kinetic friction. The objects are now brushing each other rather than being caught further in the other object. When the marbles are rolling down the wooden track with the ridges, because even though there are ridges, the marble rolls over it with less contact then it would with static friction. There is still friction, but less contact making it easier for the marble to continue rolling.
Work- Work is when a force is applied but then there is a transfer of energy. It is a proportional relationship and the work you place on an object stops when you let go. When you apply your energy it transfers through something and it creates force or movement over a specific distance. The guy in the beginning of the video pushes the little toy car to begin the chain reaction. The energy the guy uses to push the car is his work on the car, however once the car leaves his hands and travels over a certain distance the car contains the initial work and force, but is not being worked upon.
Gravitational Potential Energy- Gravity is pulling an object down, so gravitational potential energy is how able an object is to fall vertically, with no force or work acting upon it but gravity. In the video, the piano is being hoisted up by the rope, and has the gravitational potential energy to be pulled down to the ground due to gravity.
Elastic Potential Energy- The potential energy an object has when pulled forward or back. These items store potential energy and there isn’t a need of a force to make the object snap back or forward, etc. When the man in the beginning of the video puts on his goggles, there is elastic potential energy in the straps of the goggles. The straps are made out of an elastic material creating elastic potential energy for the straps to release when pulled forward or back. After being snapped though, the material goes back to its original form.
Kinetic Energy- this is energy something possess due to motion. Kinetic Energy is energy of motion not a force. This energy an object in motion, whereas kinetic friction is when two objects in motion are relative to each other. When the ball is rolling down the 2 rods, there is kinetic energy because the ball is moving, creating energy.
In the music video, there are plenty of good examples of static friction. In the video there are about 6 metallic balls resting on a plank of wood. These balls all show static friction because their mu or coefficient of friction is most likely high. Also, there are tiny collisions going on on the microscopic level between the balls and the wood. The balls need an outside force to start moving them. These balls start moving when the ball before it transfers energy to it by hitting it.
ReplyDeleteAn example of kinetic energy in the video is the tire that rolls down the ramp near the beginning of the video. The tire is originally at rest but is acted upon by an outside force. After this transfer of energy happens the tire starts producing kinetic energy. Then the tire starts rolling down. Even more force is being pushed on it by gravity. Therefore, the tire gains velocity which in turn increases the amount of kinetic energy produced. In the formula (KE=M/2 X V^2) the velocity is increased in the tire which makes the KE higher.
Work at its very core is the transfer of energy. A prime example of force is the very beginning with all of the dominoes. A member of the band makes a force on to a car which then transfers all of that energy into the first domino. A chain reaction of falling dominoes commences. Since there was an excess of energy the car continues to move a little after it hits the domino.
A great example of kinetic friction in the music video is when the giant metallic ball moves through the dark tunnel with the Japanese artwork. The ball has a pretty low mu and can travel across the board pretty smoothly. This allows the ball to move through the microscopic collisions relatively quickly and thus allows it to not have a high coefficient of friction.
Another great example of elastic potential energy is the OK Go member on the horizontal bungee cord. A lot of energy is being stored in the molecules of the bungee. This stretches that bungee out. When the man is released, all of that stored energy is released and flings him into the boxes.
Last but not least, a great example of gravitational potential energy is the yellow balls in the net stored above the member of the band. Near the end of the video a rope is released that releases a bunch of balls that fall onto a member. These balls want to be forced to the ground by gravity; however, the net keeps the balls up. Until the actual net is released, the balls show gravitational potential energy.
STATIC FRICTION: Static friction is a force that resists the movement of two objects against one another when the objects are initially at rest. When the speaker is turned on, the vibrations that are let off from the music set the once still marble in motion. The static friction that the speaker discharged caused the marble to move.
ReplyDeleteKINETIC FRICTION- The force that opposes relative motion between surfaces in contact. Kinetic friction is friction applied to a moving object. Kinetic energy is used on the tire when it is rolling because it takes much less energy for the tire to keep moving over a surface when compared to the tire in a stationary state. As the tire gains speed, moving only becomes easier as the tire travels over the inadequacies in the floor.
WORK: Work is when a force acts on a displacement of the point of application in the direction of the force. At the beginning of the video when the man applies a force on the car with his hand, work is being done on the car. When the man lets go of the car and allows the chain reaction to begin, work is no longer being applied to the car.
GRAVITATIONAL POTENTIAL ENERGY: GPE is what an object possesses because of its position in a gravitational field. An example is the piano when it is being held above ground level by a rope has a large amount of gravitational potential energy on the ground because as a result of the large mass of the piano, gravity tries very hard to pull the piano towards the ground and off of the rope.
ELASTIC POTENTIAL ENERGY: EPE is potential energy that is stored as a result of deformation of an elastic object. While the man is attached to the bungee cord, the band is stretched out which enables a greater potential energy; however, when the tension on the cord is released, the elasticity causes the man to move and his energy becomes kinetic.
KINETIC ENERGY: Kinetic energy is energy that a body possesses by virtue of being in motion. An example of kinetic energy is when the marble goes down the slope; since the marble is continuously moving and applying a force, more kinetic energy is being produced.
Static Energy is when two objects are at rest and their irregular surfaces are settled upon each other. The Lego car is an example because the car is settled on the table and need outside force from the kettle pot to start moving and exert energy,
ReplyDeleteKinetic Friction is the friction applied to any moving object. Kinetic Energy is seen when the large tire rolls down the slope. The tire and the slope are touching, but they have less contact which allows the tire to roll smoother.
Work is force and distance acting upon each other. An example of work is when the red pool ball hits the album, that knocks over the toilet paper, causing the seesaw to play the iPod. The red ball is transferring its energy to the album creating a chain reaction.
Gravitational Potential Energy is the potential for motion. An exaple of GPE is when the T.V swung back and hit the wooden base that held the hammer, causing the hammer to crash into the T.V. The T.V had the potential to fall and eventually did, as did the hammer.
Elastic Potential Energy is energy harvested in any elastic or stretchy item. The video uses EPE when the globe rolls over the rope which releases another rope that is connected to a bungee cord the releases the OK GO! blue man, causing him to accelerate backwards and crash into the boxes.
Kinetic Energy is produced by an object in motion. Kinetic Energy is experienced when the large red ball rolls down the spiral slope towards the floor, ultimately hitting the bulls eye. The ball accelerates and gains velocity, which allows the ball to collect enough energy to roll across the floor and effectively hit the bulls eye.
Static friction - An example of static friction could be the little toy car at the very beginning of the video, the microscopic imperfections in both the toy car wheels and the surface it rests on are being held together tightly. Once the car is pushed, the imperfections are pushed past each other and therefore overcome friction.
ReplyDeleteKinetic Friction - An example of kinetic friction is when the pool ball rolls down the wooden ramp, and the smooth surface of both the ball and the ramp have small imperfections, but when gravity is acting on the ball and it is rolling so quickly, there is no friction to slow it down.
Gravitational potential energy - When the tire is at rest upon the wooden ramp, it has gravitational potential energy because gravity is waiting to act on it and push it down the ramp.
Elastic potential energy - one of the most dramatic examples of elastic potential energy is when the man is pulled back on the chord into a wall of cardboard boxes. The elastic potential energy in the chord is demonstrated because when the chord is released it is put back into its natural state, releasing the potential energy.
Kenetic energy - Towards the end of the video, a blueish ball rolls down two metal rods into a basket which then triggers another reaction. The ball demonstrates kinetic energy because it is an object in motion which then caused the ball to gain velocity and create even more energy.
Work - An example of work is in the beginning of the video when the man pushes the car which then starts the beginning of a large chain reaction sequence. This pushing of the car was a force being used over a distance to cause an action.
Static Friction: The dominos in the video are specifically placed and still. An outside force is necessary in order for the dominos to fall down.
ReplyDeleteKinetic Friction: The ridges on the tire cause it to move and as friction is created, the tire could continue rolling on forever (if not stopped by an outside force).
Work: From the start, work is continuous. One small push on the red car in the beginning sparked a contagious “domino effect”.
Gravitational Potential Energy: Gravity pulls the heavy piano’s weight to the floor.
Elastic Potential Energy: When the rubber band snapped (due to the lego), it expands and then shrinks to its original shape.
Kinetic Energy: The ball gains KE when it begins rolling down the ramp, as it was initially still.
Static Friction: Happened when the red car is at rest because of the tiny microscopic imperfections in the tires making the car remain in a still state. The car happened to be in the a non-moving position because the ground surface was able to remain at a resting point and would not be moved until and outside force interferes.
ReplyDeleteKinetic Friction: When the marbles are moving down the horizontal surface simultaneously. The marbles are already moving at a constant rate because the momentum never changes as the marbles gain and loose speed. It is easier to detect kinetic friction when the object is already in motion rather than if it already had a given force's energy. Therefore since the marbles were in a horizontal space in motion then it is an example of kinetic friction.
Gravitational Potential Energy: When the piano was hanging in the air by the rope this was an example of potential energy because it had the potential to fall and was most likely to fall because of natures law of gravity. Moreover, gravity ultimately causes the piano to fall downwards.
Elastic Potential Energy: Elastic potential energy happens when the deformation of an object (like a spring) is stretched. Therefore, a good example of elastic potential energy is when the man was attached to the cord. If the cord was released the pressure of the cord would be relaxed turning the potential energy into kinetic by making the man go backwards because the decrease of elasticity.
Work: Work happened at the beginning of the video when the man with the goggles applied his own force to the little red car allowing it to hit the dominoes. By extracting a impulsive force he was able to jumpstart the whole experiment's process by dictating the motion.
Kinetic Energy: Kinetic energy happened when the bowling ball was able to roll down because of its constance of motion. Without the enhancement of a force, kinetic energy is shown.
Part One
ReplyDeleteThe Rube Goldberg machine produced by OK Go! is chock full with examples of the various physical concepts we have discussed over the past almost-two months. To begin with there is the topic of friction. Friction can be defined as a microscopic manifestation of the normal force, which is the force applied by a surface onto the surface which is applying force upon it, perpendicular to the original surface. Friction can be further subdivided into static and kinetic friction. Static friction relates to the friction present when an object is at a standstill. When an object is at rest, the force imparted upon it by gravity forces the microscopic grooves present on its surface (as nothing is truly smooth) to interlock with the microscopic grooves on the surface it is on. As these grooves interlock, the contact surface area between the two objects increases, mraning that the points at which the normal force is applied increase as well, meaning that there is a large amount of friction. An example of this in the movie is the toy car which is standing still at 0:03. It demonstrates static friction because as it stands still, the microscopic grooves on its wheels interlock with those of the ground, meaning that the member of OK Go! had to apply a larger amount of force to it in order to get it to move. Kinetic friction, on the other hand, applies to the friction present when an object is in motion. As an object moves over a surface, it does not spend enough time in any one place for the grooves on its surface to settle into those of the surface it is traveling across. Instead, the object simply “glides” across the top of these ridges. As such, the contact surface area is decreased, meaning that the energy required to keep it moving is less than that to get it moving. An example of this is the tire at 1:07. When the tire was at a standstill, the force of gravity was not enough to start it moving. However, once it began to move, gravity continued to accelerate the tire down the incline.
Part Two
ReplyDeleteNext is the concept of work. Something does work when it applies a force over a distance. An example of this is the harness holding the TV at 2:37. As the harness moves across its track, it has to apply both a vertical force, in order to keep the from falling, and a horizontal force in order to move the TV to its destination. As it travels across the distance, while applying force upon the TV, the harness does work on the TV. Following that is the concept of energy. Energy can further be subdivided into Kinetic and Potential Energy. Potential Energy is the energy an object has a result of its position, location or innate characteristics, and can once again be subdivided into Gravitational Potential Energy (GPE) and Elastic Potential Energy (EPE). GPE is the potential energy an object has as a result of the force of gravity has on it, relative to a certain surface. An example of GPE is the roll of toilet paper at 0:23. As the roll is standing on an elevated surface, it has 0 GPE in relation to said surface, however does have some GPE in relation to the floor. This GPE, however, cannot be realized due to the normal force applied on it by the surface. Once the toilet paper is pushed off the surface, however, it falls to the ground, illustrating that it did indeed have GPE relative to the ground. The other kind of potential energy, EPE, refers to the potential energy an object has due to its innate elasticity and the tension it is under. An example of this is the ropes connected to the harness the guy is in at 2:49. While the rope is held in place by its restraint it is under tension. Once this restraint is loosed by the rolling globe, however, this tension is released and the EPE of the rope is realized, letting the man be snapped back against the mat. Finally, Kinetic Energy (KE) is the energy an object in motion has a result of said motion, shown by the equation KE=1/2mv2. It is also equivalent to the energy needed to get an object into motion, which it will then maintain unless another force is exerted upon it. An example of this in the video is the tennis ball flying through the air at 1:02. As the ball is catapulted, it gains KE which it then attempts to maintain as it flies through the air. However the air resistance, and then the surface it collides with, exert force upon it, decreasing its KE.
Static Friction: An example of static friction is when the book, at the beginning of the video, is standing upright due to the imperfections and grooves of the book intertwined with imperfections and grooves of the floor until the force of the ball is used to knock the book over.
ReplyDeleteKinetic Friction: Kinetic friction is when two surfaces are touching, but there is much less static friction. When the multiple marbles started rolling down the wooden tracks there was kinetic friction because there was not enough time for the imperfections of the marbles to intertwine with the imperfections of the wood which caused the marbles to glide, or roll, down the track. There was also more of a horizontal vector that had a force upon the movement of the marbles.
Work: Work is when a force is applied to an action. An example of work is when the man first pushed the red car. He applied a force to the car causing it to move and knock down the dominoes.
Gravitational Potential Energy: An example of GPE is after the umbrellas are released, gravity is pulling them towards the ground.
Elastic Potential Energy: The man attached to the bungee chord is ultimately pulled forward causing EPE. When the chord is released, the strain from being pulled forward is let go and creates the energy for the man to go backwards.
Kinetic Energy: Kinetic energy is when an object has the ability to move. Pretty much everything in the video has kinetic energy. For example, the tire going down the wooden ramp has gravity pulling down on it causing it to roll.
Work: One key example of work was after the only force applied by one of the bandmembers in the music video in the beginning of the song. Work is shown after the force of the car that bumps into the dominos. After the dominos hit one-an-other and later the rest of Rube Goldberg machine is set off, the whole contraption is in motion due to the primary force that is generated so the machine can meet it’s final goal of shooting off paint onto the bandmembers.
ReplyDeleteKinetic Energy: Kinetic Energy is also exemplified through the first motions of the dominos hitting each other after being hit by the car. The dominos are a result of being in motion due to the dominos before them having the energy which then exerts a force keeping a constant amount of kinetic energy. As long as the dominos shared the same distance in between each other in this instance, they would transfer the same amount of energy thus being Kinetic Energy.
Gravitational Potential Energy: An example of Gravitational Potential Energy was the piano being held up by an extremely sturdy rope. Due to the piano having such a large mass, gravity only wants to pull it down , however, since the piano’s mass is held up by the rope, the piano does not hit the ground until the rope is knocked off it’s primary position then allowing the piano to succumb to the power of gravity.
Kinetic Friction: Kinetic friction is demonstrated through the marbles going through a pathway that is in the wooden plank. Kinetic friction is involved in this through that the marbles are slowing over time but still remain in motion unlike it’s opposite; static friction
Static Friction: Static friction in the music video is demonstrated through the usage of the red truck. The truck undergoes static friction because of the “intertwining surfaces” that cause the truck to come to a complete halt because their “microscopic irregularities” of the surfaces are in such close proximity with one-another.
Elastic Potential Energy: Elastic Potential Energy is portrayed in the music video through the moving and the smashing of the television. The television is held up by to ropes on each side and somehow is triggered to move to a wooden frame-like structure which is then smashed by a large hammer that is also held up by a rope-like material. Both the moving of the television and the smashing of it are key examples of Elastic Potential Energy because once their ropes holding their potential energy are moved, they then allow the next part of the Rube Goldberg machine to go underway due to the release of the potential energy by these ropes holding the pieces of the machine.
Static friction is when 2 objects lay on top of each other and the grooves and ridges get to settle into each other. An example of this is the toy car at the very beginning of the video.
ReplyDeleteKinetic friction is when the grooves and ridges of the two objects don't have the time to settle into each other as much because one object in is motion. This is best shown through the tire rolling. The tire is rolling as friction slows it down because the force of the tire rubbing against the surface.
Work is the action of applying a force. This was represented by the red car being pushed at the beginning of the video.
Gravitational potential energy is energy an object possesses because of its position. for example the hanging piano, has the potential to drop onto the floor and release its energy.
Elastic potential energy is potential energy that is stored when a body is deformed. An example of this was when the guy was attached to a bungee chord, because all the bungee chord wanted to do was go back to its original state.
Last is kinetic energy. This is the energy something has when it is in motion. The example of this in the video is the bowling ball rolling. As the ball is in motion, it has kinetic energy that is released after a force is applied to the ball to get it moving.
1.) Static Friction: the line of wooden chairs with red upholstery is an example of static friction because they are stationary and upright. The grooves and imperfections on the legs of the chair have settled into those on the floor. The chairs only fall when a force is applied to them, knocking them down.
ReplyDelete2.) Kinetic Friction: The white Lego car on the blue surface travels along the track; however, it is not a smooth ride and the car bounces up and down slightly. The Legos do not have smooth edges and the uneven surface intertwines with the track it is on causing the car to slow down.
3.) Work: the measure of change when a force is applied. There is a blue box and a gray statue both connected and held up by a rope. At first they are both unmoving but when a force is applied to the left side with the blue box it falls down and they gray statue shoots up.
4.) Gravitational Potential Energy: An example of GPE is when the car tire rolls down the wooden slide. The slide is angled downwards which allows for the tire to slide down it with gravity as the accelerator.
5.) Elastic Potential Energy: energy that gets stored in an elastic or stretchy object such as a spring or rubber. When the stretchy material expands the energy builds and the stored energy is then released when the material contracts and goes back to its regular size. When the ball is catapulted from the silver holder it is resting in is due to EPE. The long red rubber band is pulled back and then released causing the ball to fly. The energy for the ball to fly is from the EPE stored in the rubber band.
6.) Kinetic Energy: is moving energy and the huge silver ball rolling along the wooden track dodging the curtains shows kinetic energy.
Static Friction: An example was when the marbles were standing still on the track. Since they were sitting in a still position for a long time, they have a lot of static friction. Gravity worked on them and the imperfections from the marble created contact with the imperfections of the track.
ReplyDeleteKinetic Friction: An example was when the marbles were rolling down the track because while they have some resistance as they roll down, they are all still moving.
Work: An example was when the man pushes the red car. He applies force and transferred the energy form his arm into the car, which exerts the energy and causes the car to move and the dominoes to fall.
Gravitational Potential Energy: An example was when the ball goes into the basketball hoop. When the ball is lifted off the ground, gravitational potential energy does its job to make the ball fall to the ground. Also, after the ball falls down into the basket because anything that goes up must come down and gravity is working on the ball to bring it down.
Elastic Potential Energy: An example was when the man was putting on his goggles in the beginning of the video. He streches the elastic band around his goggles, increasing the stored energy until he places the goggles on his face, which compresses the band more, releasing some stored elastic potential energy.
Kinetic Energy: An example was when the soccer ball was rolling but also being supported by the two rods of metal. The ball was in motion while energy was also present because it was moving.
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ReplyDeleteStatic Friction is the force between two bodies in contact that resists the initiation of sliding motion of one over the other. An example of static friction in "This Too Shall Pass" could be when the balls are resting inside of the grooves in the wooden platform but only move downward when a force is applied.
ReplyDeleteKinetic Friction happens after a force is applied to the static friction allowing the object to move with frictional resistance. When the tire shaped object us rolling down another wooden platform, this is an example of kinetic friction. Although they might be microscopic, there are little imperfections in the shape as well as the ground it is moving on. When the uneven surfaces become intertwined, it is called kinetic friction because the interaction with both surfaces slows it down. This specific example is not stopped down by the friction, however, it is still an example of it.
Work is when a force acts upon an object to cause a displacement of the object. At the very beginning of the video when the man pushes the car he applies a force which begins a huge chain reaction. He used work to apply the force with his hand which caused the displacement of the car.
Gravitational potential energy is energy stored within an object due to its height above the surface of the Earth. The hammer that dropped and smashed the tv contained gravitational potential energy. When something detached what the hammer was hanging on by, gravity swung it down, causing it to hit the tv. The hammer was caused to swing down due to it's position in the gravitational field. Because it was not lying on a surface, gravitational potential energy built so that when they let go, gravity applies a downward force through potential energy.
Elastic potential energy refers to the potential energy of an elastic object (for example a bow or a spring) that is stressed under tension or compression. The canons that shoot the boys with paint exemplify elastic potential energy because it possesses stored energy. When this stored energy is released it allows the paint to propel forward through the air. The elastic potential energy gives the paint with a stronger horizontal vector, allowing it to push against gravity far enough to hit their faces.
Kinetic Energy is the energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed.When the metal ball or marble is rolling down the wooden platform, this is an example of kinetic energy. The marble contains movement and velocity. Kinetic energy is energy of motion.The energy of the marbles is the energy it possesses because of its motion.
Static Friction is when the imperfections of two objects go into each causing friction. An example of this is in the beginning when the toy car is pushed along the concert because the ridges and imperfections of the surface and the tire sink into each other and cause friction.
ReplyDeleteKinetic Friction is when one or both of the object is moving so the imperfections of the object don't settle into each other. An example of kinetic friction is the marble traveling in the groove, it travels quickly because the marbles imperfections do not settle into the imperfections of the wood because they are both pretty smooth.
Work is shown in the video when the man pushes the red truck. The Rube Goldberg is self sustaining and only needs the little amount of work the guy in the beginning put in.
Gravitational Potential Energy is when an object is set up to be acted on by gravity, such as holding a ball in the air and dropping it. An example of this is when the piano falls on the ground. After the piano was hung in the air, it was setup for gravity to act upon it.
Elastic potential energy is when something with elasticity is pulled so that energy is stored with in it. An example of this is when a man pulls his googles over his eyes in the beginning so the elastic band in the back is stretched, therefore storing energy in it.
Kinetic Energy is energy is the energy of an object that is in motion. There are many things in this video that contain kinetic energy but an example of it is when the shopping cart rolls down the wooden ramp, because the shopping cart gains energy as it rolls down the ramp and picks up speed.
Static Friction: An example was when the marbles were standing still on the track. Since they were sitting in a still position for a long time, they have a lot of static friction. Gravity worked on them and the imperfections from the marble created contact with the imperfections of the track.
ReplyDeleteKinetic Friction: Kinetic friction is when two surfaces are touching, but there is much less static friction. When the marbles started rolling down the tracks there was kinetic friction because there was not enough time for the imperfections of the marbles to lock in with the grooves of the wood which caused the marbles to roll down the track.
Work: Work happened at the beginning of the video when the man with the applied his own force to the red car by pushing it allowing it to hit the dominoes. His one push or force was able to cause a chain reaction to the whole track.
Gravitational potential energy - an example of this is when the tire is at on top the wooden ramp, it has gravitational potential energy because gravity is waiting to act on it and push it down the ramp.
Elastic Potential Energy:An example of Elastic Potential Energy is when the man around the giant rubber-band gets thrown into the wall. The force holding the man from being flung was released thus releasing the elastic potential energy.
1. Static Friction: At the begining when the guy in red moved the toy car on the hard surface. The man moved the car slow enough the the finite grooves of the tires interacted and caused a static friction with the finite grooves of the hard surface cause the growves to interlock and break apart.
ReplyDelete2. Kenetic Friction: An example of kenetic friction is when the marbles are traveling down the tube/track. The metalic balls are moving at such a fast pace that the grooves of the balls are just skimming over the grooves of the tube/track making travel more slick causing kenetic friction.
3. Work: The long chain reaction ends with a paint splatter on the bang members. Work is shown by how the members react to the point literally being SHOT at them. As the paint hits their bodies they must work to react and account for the force of impact maid by the paint.
4. Gravitational Potential Energy: Near the end of the music video dozens of ping pong balls are dropped on one musician, this is an example of gravitational potential energy. Before being dropped, the ping pong balls have potencial energy in correspondence to the ground/person because they are below the ping pong balls. Gravity acts apon them when being dropped which is energy.
5. Elastic Potencial Energy: An example of Elastic Potential Energy is before the guy gets flung across the room by a bungee cord. Energy is stored within the bungee cord through the stress put onto it by the man. The releasing of that stress/energy caused the man to be flung across the room demonstrating Elastic Potential Energy.
6. Kenetic Energy: An example of Kenetic Energy is when the bowling ball was given initial energy and gained speed as it kept rolling. Kenetic Energy is the energy of a moving object and, in a frictionless world, kenetic energy would keep an object moving forever unless acted upon by inertia. The bowling ball, after initial force, was moving all on its own through kenetic energy.
DeleteStatic Friction: when in standing in place
ReplyDeleteKinetic Friction: when I'm jogging in a game
Work: I put in work when I push my defender when I'm boxing out in a game
GPE-when u block a shot, gravity is pulling down the ball from the air
EPE- when I'm running with resistance on the accelerator
Kinetic Energy- it's basically everywhere and affects almost every object
Static Friction: An example of static friction is when the toy car is pushed in the beginning of the video because the small grooves in the tires react with the grooves in the surface causing a static friction.
ReplyDeleteKinectic Friction: When the tire is rolling down, the grooves in the tire react with the surface it is rolling on causing it to slow down which is an example of kinectic friction because the ball is rolling down however it is bieng slowed by friction.
Work: When a human pushes the car in the very beginning of the video this is an example of work because man made energy caused the car to start the reaction otherwise the reaction wouldnt have started it needed the work or force exerted by the man.
Gravitational Potential energy: When the piano is dangling by a string, it has the potential to fall and hit the ground because gravity would cause it to, however for the moment it is suspended so it has potential gravitational energy.
Elasticity: When the man pulls his goggles forward and they shoot back this exemplifies elasticity, for the straps of the goggle have stored energy which when pulled wants to return to its original shape.
Kinetic energy: When the bowling ball is rolling this exemplifies kinetic energy because the ball is an object in motion that is rolling down which shows kinetic energy.
Static Friction: An example of static friction would be when the metal balls are perfectly still until another ball comes and acts against their inertia, and slowing begin to move, building up speed as it goes down their specified paths, and specifically when the two balls traveling on the outside lanes interact with the balls closer to the center, causing them to move.
ReplyDeleteKinetic Friction: An example of this would be when the marble is placed in the strainer, when it begins to roll on the wood, their is resistance because of the microscopic imperfections in both the ball and the wood.
Work: This basically is the reason their is an end result. The man at the very beginning of the chain reaction pushed a red car which caused many reactions on smaller or larger scales, and ended in them finally being shot in the face with the paint.
Gravitational Potential energy: An example of this energy would be when the piano is suspended in the air, and a ball rolls down a track to knock something that eventually caused the piano to fall out of the air, and land on the ground.
Elastic Potential Energy: Using the example of the strainer again, it was suspended in the air by an elastic band, which when released cause it to circle round the candlestick, and eventually launch the ball once it reached the bottom.
Kinetic Energy: When there is the little show with the umbrella as the sun, and the flowers, there is a pulley system to it's right that causes the whole thing to move. When the weight on one side is lifted to raise what looks like the statue of the Virgin Mary, their is a kinetic energy that is allowing the Virgin Mary to raise, and this is because their is enough mass from the weight to lift the statue, as it weighs more than itself.
Static friction- at the beginning, this is shown when the car is accelerated. The man has to exert enough energy to overcome the static friction of the car to make it move.
ReplyDeleteKinetic friction- when the cue ball is rolling, microscopic imperfections dig into the ground and slow it down.
Work-the entire Rube Goldberg machine is an example of work; the force of the human starts it, and this force is then transferred all the way to the end.
GPE-the matchbox car after the dominoes is an example of this. The car is raised and unable to move; however once able to move, gravity pulls the car forward
EPE- elastic potential energy is shown through the catapult. The catapuld has the energy to snap back into place, however it is held down, unable to move.
Kinetic energy- kinetic energy is shown through the marbles on a track. They roll forward with kinetic energy, and then bump into other marbles, and transfereing kinetic energy into them.
Static Friction: An example of static friction is when the bucket is on the ground due to the fact that it’s held in place by the tiny imperfections and groves in the ground. It takes more energy to move the bucket in place than to move the bucket if it’s already in motion.
ReplyDeleteKinetic Friction: A good example of kinetic friction is the marbles rolling town the track. The marbles have some resistance as they roll down the track, but the balls still move.
Work: At the beginning of the video, the man applies the force and transfers the energy from his body to the car. This work allows the car to move and knock down all of the dominoes.
Gravitational Potential Energy: Gravitational potential energy or gravity is how much energy exists in an object when the vertical vector is applied. Gravitational potential energy exists when the ball lands into the basketball hoop. Gravitational energy pulls the basketball down, because gravity only works in one direction: down.
Elastic Potential Energy: After the man puts on his protective goggles, elastic potential energy exists in the band of the goggles. This elastic energy has the potential to snap back once the man releases the strap.
Kinetic Energy: The bowling ball rolling on the floor is a perfect example of kinetic or moving energy. Because force was initially given, kinetic energy takes over to move the ball forward.
Static Friction resists the movement of two objects against each other when they are at rest. The dominos in the video are specifically placed and still. An outside force is necessary in order for the dominos to fall down. The dominos stay up due to their ridges that mesh with the ridges of the surface.
ReplyDeleteKinetic friction occurs when two objects are moving relative to one another and rub together. The ridges on the tire cause it to move and as friction is created, the tire could continue rolling on forever (if not stopped by an outside force).
Work is a force that is applied when a transfer of energy happens. From the start, work is continuous. One small push on the red car in the beginning sparked a contagious “domino effect”.
Gravitational Potential Energy is the potential energy associated with a gravitational force. Gravity pulls the heavy piano’s mass to the floor. The heavy weight and gravitational pull provided the piano the potential to fall.
Elastic Potential Energy is the potential energy of an elastic object that is deformed under tension. When the rubber band snapped (due to the lego), it expands and then shrinks to its original shape since the energy is stored in an elastic band and released.
Kinetic Energy is the energy of motion and all moving things have kinetic energy. The ball gains KE when it begins rolling down the ramp, as it was initially still. This caused the ball to gain velocity and ultimately generate more energy.
Static Friction- is shown when the red toy car at the beginning has static friction. The ridges and un-evenness rough concrete surface and the rubberiness of the tire use each other making the car not move as much unless a greater force is to be applied (the guys hand) which over powers the power of the static friction. Static Friction is when 2 objects are moving and rubbing on each other but are at rest. (the car and the ridges on the surface.
ReplyDeleteKinetic Friction-is shown when that giant tire that rolls down the slope passing the pink balloon thing's. It takes so much less energy for the tire to keep moving over the surface then for it to move from a stationary state partially because of gravity but also because of the slant on the slope. As the tire's speed increases it becomes easier for it to slide down. Kinetic Friction is when two objects are moving and rub together along each other.
Work-is all over the place in this video. When the red car gets pushed the guy who pushed the car is doing work. But once the car hits something else (the dominoes) then the hand that pushed the car is no longer doing work. Work is the force applied when you transfer energy.
Gravitational Potential Energy: The piano has GPE with correspondence to the ground because its suspended on the rope and has a big mass over the ground. GPE is the energy associated with the force of gravity.
Elastic Potential Energy-Once the TV screen is smashed and rocks back and forth (even though nothing is moving it) shows EPE. EPE is the energy of an elastic object thats messed up using tension.
Kinetic Energy-KE is shown when the marbles move forward on the track and bump into other marbles causing those marbles to move. Kinetic Energy is the energy of motion and all moving things have energy.
Kinetic Energy is produced by an object in motion. For example Kinetic Energy is shown when the little marble rolls down the slope and because it's constantly rolling it's constantly increasing its amount of Kinetic Energy.
ReplyDeleteStatic Friction
ReplyDeleteStatic friction is when there is no movement and the irregularities merge together. From the OK GO video, a great example of Static Friction was the red car at the start of their video. The microscopic irregularities of the wheels from the car and the rough concrete surface allowed the car to stay in place very easily.
Kinetic friction
Kinetic Friction is when the irregularities of two different surfaces brush against each other and create microscopic collisions which transfers (or conserves) the momentum to continue moving. In the music video's Rube set up there was a great example of kinetic friction the red toy car, that I have mentioned before, that was at first static but when the man hand applied a constant force to it across the rugged concrete floor. Although toy car moved very slowly it was still moving with respect to the surface it was on top of.
Gravitational potential energy
Gravitational Potential Energy is the energy an object possesses before gravity acts upon it. The piano being held up by a string represented gravitational potential energy because it had the possibility of the string dropping it to the concrete floor. Before it actually dropped to the ground we could of calculated the possible amount of kinetic energy the piano had.
Elastic potential Energy
Elastic potential energy is potential energy stored as a result of deformation of an elastic object.When the bowling ball detaches blue guy, who is attached to the stretched out bungee chord, and sends him flying into the stacked up cardboard boxes. The bungee chord is an great example of EPE because it shows the deformation of stretching out the the chord to it maximum and when it is released it sling shots back in to it's original form.
Work
Work is an activity involving a force and movement in the direction of the force. When the tennis ball hits the bucket it applied a strong enough force to the giant tire which caused it to roll down the apparatus it was set on top of. So, as the tennis ball was launched into the air in the direction of the yellow bucket it transferred a powerful force that allowed the bucket to fall and gives the giant tire enough power for it gain velocity as it rolls down and exchanges the new, bigger amount of kinetic energy to the hammer at the end of the apparatus.
Kinetic energy
Kinetic Energy is energy that is in motion. In my point of view I thought everything in the video, after the car was push by the man in the red painters outfit, was an example of Kinetic Energy because when the car tapped the dominoes began to move by itself towards the next object to exchange it's kinetic energy and then everything began to move. Whether it be the chain reaction of the dominoes or the cannons that shot the guys in painter suits with different colors of paint.