Re: Spin forces II

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#935

From: GARY HEMMINGER
Date: Mon, 30 Jan 1995 15:00

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I agree wholeheartedly with those who wish to stop using the word
"centripetal".  From a strict Newtonian viewpoint it means nothing.
There are only forces, and they always add to a net which is of
utmost importance.  In non-uniform circular motion I suppose one
can use "centripetal" sensibly since one can use it and "tangential"
to describe the components of THE acceleration.  "Centifugal" should
never be used to describe a reaction force, but rather as "coriolis"
is, to describe a fictitious force.  For a wonderful explanation of
this see the classic film "Frames of Reference".  Anything else is a
confusion to your students and plain wrong.

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From: GARY HEMMINGER <HEMMIG@DWIGHT.D-E.PVT.K12.NJ.US>
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Subject: Re: Spin forces II
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