Re: Force Interactions

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1 total messages Started by Van E.Neie Fri, 01 Oct 1993 13:19

#1832

Author: Van E.Neie
Date: Fri, 01 Oct 1993 13:19

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I think someone mentioned this before, but there is an excellent discussion
of this issue in Arons' A Guide to Introductory Physics Teaching, p. 67.  The
point is that the reaction is not always instantaneous to the action (cf:
the push on one of a rod being communicated to the other end).  As Arons points
out, Newton's Third LAw isn't always true, which is why the Conservation of
Momentum is given more emphasis in modern physics.
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Van E. Neie                                      ven@physics.purdue.edu
Purdue University                                neie@purccvm.bitnet
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