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A person weighing 30 kg walks on a level...

A person weighing 30 kg walks on a level platform with  a speed of 2 m/sec. The work done by the person against force of gravity is:

A

Zero

B

2 ergs

C

60 ergs

D

60 Joules

Text Solution

Verified by Experts

The correct Answer is:
a
Work done is zero as force and displacement `_|_` to each other and there is no net force along horizontal as velocity is constant.
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