Centripetal vs. centrifugal force

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From: Black, Heidi (BlackH@exchange.esuhsd.org)
Date: Wed Nov 20 2002 - 14:02:53 PST 

Message-ID: <190CE0E37D38D311BFB9009027858A5804279D45@exchange.esuhsd.org>
From: "Black, Heidi" <BlackH@exchange.esuhsd.org>
Subject:  Centripetal vs. centrifugal force
Date: Wed, 20 Nov 2002 14:02:53 -0800

Heidi Strahm Black
Science Fair Coordinator
East Side Union HSD
408-347-6563

I am introducing centripetal force to my physics classes and I really want
some demonstrations that will stress the "center-seeking" centripetal force.

  

I had a great little bean bag on a string with colorful foot long ribbons
sewn on the sack. (I can't remember if I got it at a craft fair or a toy
store, but it would be easy to make) I would swing it around over my head
and simply say "now what happens if the string breaks?" and let it go
flying.
The ribbons helped to trace its path.

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