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A block of mass 10 kg is hanging over a ...

A block of mass 10 kg is hanging over a smooth and light pulley through a light string and the other end of the string is pulled down by a constant force F. The kinetic energy of the block increases by 20 J in 1 s

A

Tension in string is 120 N

B

Tension is string is 100 N

C

The work done by tension on the block is 120 J in 1 s

D

The work done by the force of gravity is 100 J

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The correct Answer is:
A, C
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