Question

what is the work done by a coolie walking on a horizontal platform with a load on his head?

Answer 1

work= FS cos theta
theta=O then work will be zero

Answer 2

$\huge\star\mathfrak\red{{Hey Mate...!!}}$

● 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