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Question

Find work done by force, F on B during 100 m displacement.

0 J
1000 J
2000 J
4000 J

A

2000 J

B

1000 J

C

4000 J

D

0 J

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Solution

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The displacement of the whole system is $100 m$
But the body suffers zero displacement with respect to A.
$∴$ Work done= F.S = $0 J$

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