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Old 29-10-2010, 10:01 AM
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bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
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Quote:
Originally Posted by sjastro View Post
Bojan,

If the larger mass has a greater density this corresponds to a reduction in r (since density = mass/r^3).

The smaller mass is now closer to the centre of the large mass..
Could you please explain this in more detail ?
I don't get it how the distance can vary with density of the large mass only.
(unless this applies to a total mass)
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