Question

The weight lifted lifts the weight but net work done is zero how

Answer 1

Answer:

I'm little confused here. Work done on the body when we lift it and put it on the table is zero, because according to work energy theorem, change in kinetic energy of the body is zero. So, the net work done is zero.

Fine, but now the object has mgh (where m=mass of body; h=height of body) amount of potential energy stored in it. If the net work done is zero then who has increased its energy?

I'm confused and unable to think it through kindly help.