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Re: dropped slinky



Excellent, John!

Applying my simplified model:
the system consists of the two end masses connected by a spring of seven
masses. thus my predicted acceleration is 2g + g(7/1) = 9g !

A much simpler model applies:
The upper mass (turn) is initially in equilibrium under your force F and
the total spring weight M. When your F vanishes, the mass m accelerates
under influence of the total string weight Mg, so that a = Mg/m = 9g in
your setup.


Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor
----- Original Message -----
From: "John Mallinckrodt" <ajm@CSUPOMONA.EDU>
To: <PHYS-L@lists.nau.edu>
Sent: Friday, November 22, 2002 2:39 PM
Subject: Re: dropped slinky


| I've put an animation built with Interactive Physics online at
|
| <http://www.csupomona.edu/~ajm/special/slinky_drop.mov>
|
| --
| John Mallinckrodt mailto:ajm@csupomona.edu
| Cal Poly Pomona http://www.csupomona.edu/~ajm
|
| This posting is the position of the writer, not that of SUNY-BSC, NAU or
the AAPT.

This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.