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Re: Sauropods vs. Gravity - Jim



The g force at the surface is inversely proportional to the square of
the radius.  So, a smaller planet with the same mass will have a greater
surface gravity by the square of the ratio of the two radii.  This is
also why planets nearer the sun move faster in their orbits than planets
further out.  And it is part of the reason why we weigh more at the
poles than at the equator (that part of the difference due to equatorial
bulge), with the other part of the reason being centrifugal force due to
the spin.  The equation relating gravitational attractive force to mass
and distance is the resource.

Jim

Paul Cambridge wrote:

> ...how can a smaller planet have greater surface gravity than a larger
planet? Any resources? Thanks.
>
> Paul