Name:
Anonymous
2008-04-14 15:08
The moon's mass is only 0.0123 Earth's but the moon's gravity is 1/6th Earth's.
Why is this?
Name:
Anonymous
2008-04-14 20:59
Moon:
Mass - 7.3 * 10^22 kg
Radius - 1.73 * 10^6 m
Mass / (radius)^2 = 2.43 * 10^10
Earth:
Mass - 5.97 * 10^24
Radius - 6.37 * 10^6
Mass / (radius)^2 = 1.47 * 10^11
2.43 * 10^10 / 1.47 * 10^11 = 0.165
1/6 = 0.166