Rahul is standing still with a 5kg weight on his head for 5 hours. The work done is .
A
6J
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B
0J
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C
300J
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Solution
The correct option is B0J We know that Workdone=force×displacement
It is given that, Rahul is standing still with a box of 5kg on his head. Since the box is not displaced, displacement is zero. Therefore the work done on the box by Rahul is zero.