A girl of mass 40 kg sits in a swing formed by a rope of 6 m length. A person pulls the
Channel: Doubtnut
Date: 02/11/2021

A girl of mass 40 kg sits in a swing formed by a rope of 6 m length. A person pulls the swing to a side so that the rope makies an angle of `60^(@)` with the vertical. What is the gain in potential energy of the girl ?