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A coolie lifts a box and walks on horizo...

A coolie lifts a box and walks on horizontal smooth surface, the work done by him against gravity is :

A

Zero

B

Product of weight and distance travelled

C

Product of weight and height of the box

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
a
Work done is zero as force and displacement are perpendicular to each other.
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