A student of weight 672 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force...

A student of weight 672 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from the seat is 559 N. (a) What is the magnitude of N at the lowest point? If the wheel's speed is doubled, what is the magnitude FN at the (b) highest and (c) lowest point?