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*To*: dinoguy@sympatico.ca*Subject*: Re: Sauropods vs. Gravity*From*: NJPharris@aol.com*Date*: Tue, 5 Mar 2002 00:40:05 EST*Cc*: dinosaur@usc.edu*Reply-to*: NJPharris@aol.com*Sender*: owner-dinosaur@usc.edu

In a message dated 3/4/02 3:06:31 AM Eastern Standard Time, dinoguy@sympatico.ca writes: > Gravitation is the force of attraction between two bodies, such asthe Earth > and our body. The strength of this attraction depends onthe mass of the two > bodies and the distance between them. Correct. More precisely, it depends on the mass of the two bodies and the distance between their *centers of gravity*. For a planet, the center of gravity is more or less at the center of the planet. Thus, for a given mass, a greater volume (hence a greater distance between the planet's surface and its center of gravity) means less gravitational attraction between the planet and an object located on its surface. But this is somewhat off-topic, so I'll shut up now... --Nick P.

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