Recent content by wkrasl

Sounds like good advice.

The Saddlebrook proof actually didn't include the entire sphere. If it had, it would have included a double integral over "theta" (which only traverses a single great circle) plus a separate rotation angle "phi" about the z line axis (to sweep the infinitely many great circles comprising the...

Hmmm... At least two people, including the originator of the thread, think I'm wrong about the shell theorem applying to a ring. Thanks for all the math in the reply. For a little more clarity, see the diagram and the math on...

I recall confirming the calculus in Phys101 that gravity everywhere inside a hollow sphere is zero regardless of mass. I expect the same would be true on the inside surface of a ring, aside from a purely lateral component pulling one sideways towards the ring "equator".

Thanks for the extra info on "r" and "a". I concur with the estimation for "v", so I guess one "day" is 2*pi*r/v = 4443 seconds or about 1.23 hours. :)

I'm not sure I understand the question since the question implies a non-zero "gravitational field intensity at any point on the axis of the ring." Otherwise, this looks like simple Physics 101 question on centrifugal force. I don't know the game, but assume that Halo is a ring somewhat...