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Question

Shishir was playing with a spring. He was compressing and releasing it. Suddenly he noticed that a ball, when kept on a spring, attains a certain height after it is compressed and released. What is the change of energy?



A

3m

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B

5m

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C

7m

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D

9m

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Solution

The correct option is A

3m


Compression of a spring - energy conversion is from muscular to potential energy. Release of spring - energy conversion is from potential to kinetic and this kinetic energy helps ball attaining maximum height. 


Physics

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