No work is done by a force if the body:
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does not move
Reason — Work is said to be done if the force applied on the body makes the body move but if there is no motion in the body then work done is zero.
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The S.I. unit of work is:
Two coolies A and B do some work in time 1 minute and 2 minute respectively. The power spent is:
1 H.P. is equal to: