Posted by Liz Rachal on November 23, 1998 at 13:26:32:
1) Uranus has a moon, Umbriel, whose mean orbital radius is 2.67*10^8 m and whose period is 99.4 hours. Find the period of another of Uranus's moons, Oberon, whose mean orbital readius is 4.86*10^8 m.
2) A 70 kg student on a steadily rotating Ferris wheel had an apparent mass of 57 kg at the highest point. If the wheel's speed is doubled, what will be the student's apparent mass at both the highest and lowest points of the wheel's rotation?