Question

(i) With reference to their direction of action, how does a centripetal force differ from a centrifugal force?
(ii) State the Principle of conservation of energy.
(iii) Name the form of energy which a body may possess even when it is not in motion.

Answer 1

(i) Centripetal force is directed towards the centre of the circle while centrifugal force is opposite to centripetal force, i.e., it is direcetd away from the centre of the circle.
(ii) Principle of Conservation of Energy: Energy can neither be created nor destroyed. It can be converted from one form to other.
(iii) Potential energy is the form of energy which a body may possess even when it is not in motion.