Reality Check
Penultimate Amazing
As explained to you many times before, markie, not in the real worldLet me ask you: If you got a hellishly long piece of rebar, wrapped it around the earth in a low orbit such that if formed a perfect ring, and set it spinning, could it stay in orbit?
.The net gravitational force between a ring and a central body is zero. The orbit is instable. Any perturbation will deorbit the ring. For example, solar ration pressure will do that.
Ditto for the electrostatic forces between a charged ring and an internal charge. Ditto for a sphere. Ditto for the electrostatic forces between a charged sphere and an internal charge.
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