Question

find the mathematical expression for gravitational potential energy

Answer 1

Consider an object of mass"m",let it be raised through a height "h"from the ground.A force is required to do this.The minimum force required to raise the object is equal to the weight of the object"mg".The object gains energy equal to the work done on it.let the worl done on the object be "w".That is,

work done,W=force*displacement

                                           =mg*h

                                             =mgh

                                                    ep=mgh

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