1. Do centripetal and centrifugal act on same body or on different bodies?? I am told that if a stone tied to one end of the string is revolved around its another end(fixed), centripetal force acts on stone and centrifugal force acts on the fixed end of the string. 3. The attempt at a solution I say both forces act on same body, centripetal provided by some another force and centrifugal due its own inertia. Which statement is true?? mine or the first one??