# 1. A Ferris wheel 22.0 m in diameter rotates once every 12.5 s (see Fig. 5 19). What is the ratio of

1. A Ferris wheel 22.0 m in diameter

rotates once every 12.5 s (see Fig. 5 19). What is the ratio of a persons

apparent weight to her real weight (a) at the top, and (b) at the bottom?

FIGURE 5-19

2. Three bodies of identical mass M form

the vertices of an equilateral triangle of side and rotate in circular orbits about the center of the triangle. They

are held in place by their mutual gravitation. What is the speed of each?