Question

a coolie is moving on a road with luggage on his head does he perform work against the force of gravity give reason for your answer

Answer 1

Assuming a flat road and no up down bobble movement
The porter is not displacing vertically and thus work done against rabbity is zero

Please Mark As Brainliest I need it a lot please

I have answered first

Answer 2

No ....no work is done....

Work done by a coolie, walking on level road with load on his head, on the load is zero.
2. Work done = Force x displacement

W = F.s = Fs cos θ

where  θ is the angle between the direction of force and the direction of displacement of the object. If they are perpendicular to each other  θ = 90°. We have cos  90° = 0. Therefore
W  = F x s x 0 =0