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Ian Parker
#9
Feb5-09, 05:30 AM
P: n/a
The Earth raised tides on the Moon. This caused the Moon's rotation to
slow down and eventually stop relatrive to its orbit.

There are many other instances.

http://en.wikipedia.org/wiki/Tidal_locking

Much more interesting is where rotation and orbital motion are in
multiples.

http://www.phy.ohiou.edu/~astro/Disp...07-18-2006.pdf

http://en.wikipedia.org/wiki/Orbital_resonance

The presence of resonance is particularly interesting. It indicates
that a complete lock may not be the most stable state. There are
implications in other fields of Physics.

- Ian Parker