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Q.

Certain weight is attached to a spring. It is pulled down and then released. It oscillates up and down. Its K.E will be 

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a

Maximum in the middle of the movement

b

Maximum at the bottom

c

Maximum just before it is released

d

Constant

answer is A.

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Detailed Solution

A weight is attached to a spring upon pulling it down and released it will be moving up and down as shown.

Question Image

 

 

 

 

 

 

At positions A and B it will possess P.E and at mean position it will have maximum velocity and gain maximum K.E.

So option (A) is correctly explaining the event remaining options are not relevant.

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