Originally posted by: Iron Woode
Originally posted by: syberscott
Originally posted by: Iron Woode
Originally posted by: edro13
Originally posted by: Beau
Originally posted by: edro13
Well no crap... I was using it as an example....
An example of what? I don't see how it applies.
There is gravity on the moon, but it is a lot less....
yet you do not fly off the moon when there is no rotation.... Therefore, the centrifigal force is prolly a lot less than gravity.
The moon rotates on its axis. This is basic astronomy.
Actually the moon doesn't really rotate. The Earth's gravity has captured it, so the moon always shows us the same face.
The moon rotates every 30 days. Check it out.
Quote:
The asymmetric nature of this gravitational interaction is also responsible for the fact that the Moon rotates synchronously, i.e. it is locked in phase with its orbit so that the same side is always facing toward the Earth. Just as the Earth's rotation is now being slowed by the Moon's influence so in the distant past the Moon's rotation was slowed by the action of the Earth, but in that case the effect was much stronger. When the Moon's rotation rate was slowed to match its orbital period (such that the bulge always faced toward the Earth) there was no longer an off-center torque on the Moon and a stable situation was achieved. The same thing has happened to most of the other satellites in the solar system. Eventually, the Earth's rotation will be slowed to match the Moon's period, too, as is the case with Pluto and Charon.
Taken from:
http://seds.lpl.arizona.edu/nineplanets/nineplanets/luna.html
There is a link in the word synchronously that explains how this word is defined.