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A block hangs freely from the end of a s...

A block hangs freely from the end of a spring. A boy then slowly pushes the block upwards so that the spring becomes strain free. The gain in gravitational potential energy of the block during this process is not equal to

A

The work done by the boy against the gravitational force acting on the block

B

The loss of energy stored in the spring minus the work done by the tension in the spring

C

The work done on the block by the boy plus the loss of energy stored in the spring

D

The work done on the block by the boy minus the work done by the tension in the spring plus the loss of energy stored in the spring

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The correct Answer is:
A, B, D
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AAKASH INSTITUTE-WORK, ENERGY AND POWER-SECTION-C (OBJECTIVE TYPE QUESTIONS) (MORE THAN ONE OPTIONS ARE CORRECT)
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