Take a rubber band.
Hold it at one end and pull from the other .The band stretches.
Release the band at one of the ends . What happens?
The band will tend to regain its original length.
Obviously the band had acquired energy in its stretched position.
How did it acquire energy when stretched? Explain.
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Explanation:
You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy. ... When the rubber band is released, the potential energy is quickly converted to kinetic (motion) energy.
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The rubber band acquires energy due to the action of stretching.
- When the band is stretched, potential energy gets accumulated. This energy is known as elastic potential energy as the object that is being pulled is elastic. This stored energy is directly proportional to the magnitude of the stretch
- This means that the more the rubber is stretched, the more energy it will store
- As it gets stretched, the distance between the molecules of the band increases and they get aligned in a particular direction
- When the band is released from the hand, it returns to its original shape while releasing the stored energy as kinetic
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