Question

A coolie has a suitcase over his head . He walks 2m . what is the work done by coolie on the suitcase ? Give reason for your answer .​

Answer 1

• work done is mathematically defined as,

W = F × D

• Where D is the displacement in the direction of the force applied.

• since the suitcase is on his head and no displacement has occurred, the work done 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