Question

A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.​

Answer 1

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● The work done will be zero because a coolie carries a load make an angle of 90 degree wherever the 90 degree created the work done will be zero.

Proof:

W = FS Cos Q

W = FS Cos (90°)

W = FS (0)

W = 0