Re: Gore's Ball

[Brad Shue <jshue@comp.uark.edu>]

On Wed, 16 Jul 1997 herbgottlieb@juno.com wrote:
> I've never heard of Gore's ball. However there is a device which suspends
> five metal balls from strings. They are allowed to collide to illustrate
> conservation of momentum and energy.  My stgudents always referred to
> this apparatus as NEWTON'S BALLS.

Herb,
	I think he is refering to a variation on a "rail gun" that uses
the magnetic fields produced by a flowing current to cause an object to
move.  We do this with a Pasco magnet, 2 brass rods and a slider that
slides down the rods when current from a battery flows through it.
--
James Bradford Shue                             jshue@comp.uark.edu
University of Arkansas                          Voice phone:(501) 575-6059
Physics Lab/Demo Curator                        FAX Number: (501) 575-4580
WWW Page					http://comp.uark.edu/~jshue
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