Re: Mass increase and relativistically movicg black holes

From: Dirk Bruere at Neopax (dirk_at_neopax.com)
Date: 12/24/04 

Date: Fri, 24 Dec 2004 12:49:18 +0000 (UTC)

Dirk Van de moortel wrote:

>>>See
>>> http://hermes.physics.adelaide.edu.au/~dkoks/Faq/Relativity/SR/mass.html
>>>(once more)
>>>
>>>Dirk Vdm
>>>
>>
>>A nice read, but other than differentiate between relativistic mass and
>>invariant mass, this doesn't answer my question.
>
>
> Your question was:
> "How does a black that is moving at some significant fraction of
> the speed of light show an increase in its mass due to its motion?"
> and the article does give the answer:
> It does not.

I'm afraid the FAQ does not actually explain why, other than stating
" Relativistic mass, which increases with the velocity and kinetic energy of an
object, cannot be blindly substituted into formulae such as the one that gives
the radius for a black hole in terms of its mass."

Why cannot it be blindly substituted? Simply because it gives the 'wrong'
answer? And how is 'wrong' defined? 

-- 
Dirk
The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

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