When is work said to be done against the force of gravity?
Answers
Answered by
1
when we lift the book above ground ,etc
Answered by
2
Work done by a body is against the applied force if the displacement is in a direction opposite to the force. In the case of gravity, if a body is lifted above the ground, work is done against gravity.
All bodies with mass are attracted towards the earth by gravity, so when a body is lifted one has to do work to raise it.
Work done against gravity = Force x Displacement = Weight x Height = mgh = gravitational potential energy stored in the body.
Similar questions