If the value of g suddenly becomes twice its value , it will become two times more difficult to pull a heavy object along the floor . Why ?

Explanation

To pull an object along the floor , it is necessary to do work against the force of friction between the object and the surface of the floor . This force of friction is proportional to the weight , mg , of the object . If the value of g becomes twice its value , the weight of the object and hence the force of friction will become double . Therefore , it will become two times more difficult to pull a heavy object along the floor .