Question

what is the work done by a coolie walking on a horizontal plat form with a load on his head
​

Answer 1

Answer:

work done is zero by the coolie

thank you

Answer 2

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 = Fxsx0 = 0