Joe Kearney

148 reputation

	148 reputation	bio	website		visits	member for	1 year, 11 months
3 badges		location			seen	Mar 28 at 14:18

8 Actions

Jun 20	awarded	Scholar
Jun 20	accepted	infinite grid of planets with newtonian gravity
Jun 17	awarded	Supporter
Jun 14	comment	infinite grid of planets with newtonian gravity the gravitational potential stuff, would you consider that to be a part of Newtonian mechanics? I'm willing to write off all of my assumptions as soon as we talk about general relativity, simply because I don't understand enough to have any intuition about what's going on. Does any of what you say show ill-defined-ness or non-equilibruim in a purely Newtonian/Euclidean setup?
Jun 14	comment	infinite grid of planets with newtonian gravity I can only really answer your last point here: if I understand you correctly, the integrand being an odd function means that the force on each planet is zero, but shifting the centre of the spherical coordinates to get a non-zero result is fine. This amounts to saying that the gravitation force at those points is non-zero, but there's no mass on which to act at those points so that's fine.
Jun 13	comment	infinite grid of planets with newtonian gravity I realise that equilibrium would be unstable. I still don't think anything will move without some other perturbation.
Jun 13	awarded	Student
Jun 13	asked	infinite grid of planets with newtonian gravity