Week 4 Discussion 5 7 One of the main topics this week is circular, or centripetal, motion looking at its acceleration and associated force. Often times, CENTRIFUGAL force is used in describing circular motion. For the centripetal force, is this a NEW force, explain? Is CENTRIFUGAL force an appropriate alternative to centripetal force, explain? One example of centripetal force is its application to curves - flat & banked - in terms of the maximum speed one can make the curve, what happens when the coefficient of friction changes (up & down)? What happens in each case if friction is lost? Did you find the observation surprising? Intriguing