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Question

The work done by a man in holding a $15 k g$ suitcase while waiting for a bus for $45$ minutes is
$675 J$
$405 J$
$450 J$
Zero

A

450 J

B

Zero

C

405 J

D

675 J

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Solution

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Work=Force $\times$ displacement
Since displacement is zero,therefore work done is zero.

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