Question

If a porter (coolie) moves on a horizontal platform for 2 m, with a luggage of 70 N on his head, what
work will be done by him?​

Answer 1

Answer:

work done = F × d

Therefore, work done=70×2 Nm

=140 Pa(1Pa=1Nm)[ans]

Explanation:

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Answer 2

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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