Question

State whether the given statement is correct or not.
Work done on a body, in the motion of that body over a close loop is zero for every force in nature.

Answer 1

According to given statement,
Work done on a body, in the motion of that body over a closed loop is zero for every force in nature. It is not true because the external forces on the body may change the total energy of the body. This is because in such collisions, there is always a loss of energy in the form of heat, sound etc. therefore it is not true for every force in nature, when the body is moving under the action of conservation forces (like gravitational or electrostatic forces).
It is not zero when the forces are non-conservative e.g., frictional forces etc.
Final Answer: No.