Harmonic Motion
Bodies in a circular path around a center undergo harmonic motion, whit a good approximation applied to the planets around the Sun and moons around planets. In this video we are going to determine the differential equation and give a solution to calculate the resonance gaps in the Asteroid Belt.
The lecture is in the following site;
http://www.showme.com/sh?h=D4qb5bU
AstroDidactics 