Define potential energy and derive its relation?
The energy possessed by a body due to its position is known as its potential energy.
Derivation of P.E:
Let a body of mass m be raised through height h from the ground. The body will acquire potential energy equal to the work done in lifting it to height h.
Thus, Potential energy P.E. =$F\times h$
= $w\times h$
(Here weight of the body = w = mg)
P.E.= w h= mgh………(i)
Thus, the potential energy possessed by the body concerning the ground is much and is equal to the work done in lifting it to height h.