Question

Similarly, if a coolie moves on a plane road with
on his head, the work done by him against the
force of gravity (i.e., Weight) is zero. Since, distance
moved by him is normal to his weight.
Explain the meaning of "the work done by him against the force of gravity that is weight is zero "​

Answer 1

Answer:

the work done by coolie is zero as no work done is done as the weight and force of gravity makes an angle of 90 degree so the distance can't be zero unless and until it is in rest position

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