How does the centripetal force vary with the radius of the circular path? Consider (a) constant frequency and (b) constant speed. Was this substantiated by experimental results? 2. If the centripetal force on an object in uniform circular motion is increased, what is the effect on (a) the frequency of rotation f (with r constant) and (b) f and r when both are free to vary? 3. Does the centripetal force acting on an object in uniform circular motion do work on the object? Explain