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Assertion :One end of an ideal mass less spring is connected to a fixed vertical wall and the other end has a block of mass m initially at rest on a smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on the block as shown. Then the maximum extension in spring is equal to the maximum compression in the spring. Reason: To compress and to expand an ideal unstretched spring by equal amount, same work is to be done on the spring.
Assertion :One end of an ideal mass less spring is connected to a fixed vertical wall and the other end has a block of mass m initially at rest on a smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on the block as shown. Then the maximum extension in spring is equal to the maximum compression in the spring. Reason: To compress and to expand an ideal unstretched spring by equal amount, same work is to be done on the spring.
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Solution
The correct option is D Assertion is incorrect but Reason is correct
The energy which will be stored in extension will be same as the energy stored in compression by same amount of force, So amount of compression and extension will be same.
The energy which will be stored in extension will be same as the energy stored in compression by same amount of force, So amount of compression and extension will be same.
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