- #1

stevebd1

Gold Member

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## Main Question or Discussion Point

**gravity of a rotating torus**

While Gm/r^2 seems to apply only for gravitational acceleration towards spheroids, what would be the equation for gravitational acceleration towards a rotating torus? I'm sure the equation would be the same for spheroids and toroids at large distances but what would be the equation in close proximity to the torus (i.e. the outer surface)?

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