Question

A person pulls a bucket of water from a well of depth h. If mass of uniform rope is m and that of bucket full of water is M. Then work done by the person is?

Answer 1

As we know, work = F.S cos x

Here, x is angle b/w person hand and rope = 90°

Thus, work = F.S cos 90°
= F.S × 0 = 0 joule

Answer 2

Hi , friend !!!

Depth of well = h

mass = M

work done => FS cos∅

∅ = 90 °

hence , zero work done


hope it help you !
thanks !!