Cool...Now I know where to go with all my physics related questions (grin). I suspect that, while really interesting, this may amount to a level of detail that goes beyond the scope of s0meguy's original intent. I can say, for myself, that my world building project won't require this level of detail. In fact...I know my imaginary planet defies all kinds of 'laws of physics'. I'm using lots of divine intervention to justify things. Trying to mix a certain degree of realism with your fantasy can be a tricky balancing act.