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*To*: dinosaur@usc.edu*Subject*: Sauropods vs. Gravity*From*: "James R. Cunningham" <jrccea@bellsouth.net>*Date*: Mon, 04 Mar 2002 03:16:58 -0800*Reply-to*: jrccea@bellsouth.net*Sender*: owner-dinosaur@usc.edu

The gravitational attraction is proportional to the mass, and to the inverse square of the distance between the two bodies. (halve the distance, and the attraction goes up by a factor of 4). So, for a given mass the gravitational attraction at the surface is stronger if the radius of the body is smaller. This is also why objects in elliptical orbits move faster when near perigee than near apogee. Jim Darryl Jones wrote: At 03:28 PM 3/3/2002, you wrote: I looked up this topic and found this from the USGS: "Gravitation is the force of attraction between two bodies, such as the Earth and our body. The strength of this attraction depends on the mass of the two bodies and the inverse square of the distance between them." [emphasis Jim's] What am I missing?

**Follow-Ups**:**Re: Sauropods vs. Gravity***From:*"James R. Cunningham" <jrccea@bellsouth.net>

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