If you are going to school from home and then come back to your home after some time, then the net displacement by you is zero. So the net work done by you is zero. Then your effort during all these motion is zero?????

Answers (1)
S safeer
No, its not zero. Actually it happens only when the force is conservative in nature, but the force or effort applied by you is not conservative in nature. That is why the work done by you is not zero