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Q.

After 30 minutes of holding a hay bundle over his head, Rajesh becomes exhausted. The work done by Rajesh is 

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a

100 J 

b

Equal to the weight of the bundle × height of the person

c

Zero

d

Data insufficient

answer is C.

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Detailed Solution

After 30 minutes of holding a hay bundle over his head, Rajesh becomes exhausted. The work done by Rajesh is zero

Rajesh does not move from his position (no displacement) in spite of applying force on the bundle. Therefore, no work is done.

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