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From: djg@nscpdc.UUCP (Derek J. Godfrey)
Newsgroups: sci.physics
Subject: Re: Re: Acceleration vs. Gravity
Message-ID: <621@nscpdc.UUCP>
Date: Fri, 31-Oct-86 11:14:45 EST
Article-I.D.: nscpdc.621
Posted: Fri Oct 31 11:14:45 1986
Date-Received: Mon, 3-Nov-86 22:39:59 EST
References: <6108@decwrl.DEC.COM> <320@slu70.UUCP>
Organization: NSC Portland Development Center, Portland Oregon
Lines: 14

> In article <6108@decwrl.DEC.COM>, wasser@mosaic.dec.com.UUCP writes:
> > 
> > 	1) The acceleration is stronger at the bottom of the
> > 	elevator because the bottom is closer to the center of
> > 	gravity.
> Actually, Experiment 1 can also probably be gimmicked. The gravitational
> acceleration within the earth doesn't change much until you get to the
> core-mantle boundary. This basically occurs because the core is much denser
> than the mantle so that the fact that you have less mass under you as
> you go down is compensated by the fact that you are closer to the dense
> core.

I always understood gravity varied with r^2 between two bodies two non-
coincident bodies but r when one is contained within the other.