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Re: Conspiracy Theory- Earth's Expansion



The force is inversely proportional to the square of the distance between the two objects (using just the diameter of the earth is close enough).

Therefore for constant mass, halving the diameter of the earth would INcrease the surface gravity by a factor of four. A smaller earth would necessarily have a larger surface gravity.
JimC


----- Original Message ----- From: "Thomas R. Holtz, Jr." <tholtz@umd.edu>
To: <Ken.Carpenter@dmns.org>; <d_ohmes@yahoo.com>
Cc: <dinosaur@usc.edu>
Sent: Thursday, January 10, 2008 12:19 PM
Subject: RE: Conspiracy Theory- Earth's Expansion



But surface gravity = Gm/(r^2) (Where G = the gravitational constant).

Since G is a constant, and m would be fixed for the planet, a smaller Earth
would necessarily have a smaller surface gravity.