Answer to Question #48863 in Atomic and Nuclear Physics for Faruk

Question

what is the reaction force of centripetal force?

Answer 1

The reaction force of centripetal force is reactive centrifugal force. It forms part of an action–reaction pair with a centripetal force, but only in circumstances where the centripetal force arises from direct physical contact with the body in question.
Unlike the pseudo force or fictitious force known as centrifugal force, which always exists in addition to the reactive force in the rotating frame of reference, the reactive centrifugal force is a real Newtonian force that is observed in any reference frame.