Here the work done is said to be zero, as the displacement is not there but the coolie does move - Physics - Force Work Power and Energy

Question

Here the work done is said to be zero, as the displacement is not
there but the coolie does move the load upwards so should that not
be considered as displacement So then the work would be nom zero

Vipra Mishra · Accepted Answer

Solution
This is because the coolie applies force against the force of
gravity which acts in a vertically downward direction and
displacement of load takes place in a horizontal direction hence
angle between displacement and force becomes 90°

Work done=F s
=Fs cos θ
Here work and displacement are perpendicular hence θ=90
Since cos 90 = 0

Here the work done is said to be zero, as the displacement is not there but the coolie does move the load upwards so should that not be considered as displacement. So then the work would be nom zero