일반물리학 1 — Force and Motion-II: Problem 45

45 A student of weight 667 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force \( F_N \) on the student from the seat is 556 N. (a) Does the student feel "light" or "heavy" there? (b) What is the magnitude of \( F_N \) at the lowest point? If the wheel’s speed is doubled, what is the magnitude \( F_N \) at the (c) highest and (d) lowest point?