Message-ID: <4ZJHypG00VcJ0GzE4D@andrew.cmu.edu>
Reply-To: space+@Andrew.CMU.EDU
From: space-request+@Andrew.CMU.EDU
To: space+@Andrew.CMU.EDU
Date: Mon,  6 Nov 89 03:24:21 -0500 (EST)
Subject: SPACE Digest V10 #210

SPACE Digest                                     Volume 10 : Issue 210

Today's Topics:
	   Re: Apology regarding posting regarding gravity
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Date: 6 Nov 89 06:47:19 GMT
From: voder!dtg.nsc.com!andrew@ucbvax.Berkeley.EDU  (Lord Snooty @ The Giant Poisoned Electric Head )
Subject: Re: Apology regarding posting regarding gravity

In article <10514@vaxc.cc.monash.edu.au>, cen466p@vaxc.cc.monash.edu.au writes:
>       Sorry.  Inverse square law applies only for external points.  ( i.e the
> point considered is outside the body).
> For internal points (ie inside a particle) the force of attraction varies
> *linearly * with radial position.  Sorry for the mistake.

Except when the "particle" is a shell - then the field is everywhere zero
inside. If the particle density varies as 1/r, then a constant acceleration
towards the centre is everywhere asserted (in case you want to do
equivalence-type experiments!)
-- 
...........................................................................
Andrew Palfreyman	a wet bird never flies at night		time sucks
andrew@dtg.nsc.com	there are always two sides to a broken window

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End of SPACE Digest V10 #210
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