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Re: Action - Reaction Demo



You can get the "Dick and Rae Physics Demo Notebook."

For this experiment, they reference "The Physics Teacher," vol. 27,
p. 560 (1989).

Dick and Rae [p. M-566] say that "alteration of orifice in
some extinguishers may be necessary. If orifice has two side holes
(to prevent recoil in use), end must be fitted with screw-on
attachment or cut off to provide for unidirectional gas flow only.
Companies recharging carbon dioxide extinguishers my require that
cylinder be repainted and marked 'Not for Fire' once orifice has been
modified."

They claim that you get 5 shots per tank.

Hope this helps,
Regards,
Steven Ratliff
Date: Tue, 15 Sep 1998 08:24:51 +0000
Reply-to: phys-l@mailer.uwf.edu
From: Tony Wayne <wayne@pen.k12.va.us>
To: Physics List <phys-l@atlantis.uwf.edu>
Subject: Action - Reaction Demo

Has anyone every made an action reaction demonstration
using a fire extinguisher or air tank of some kind?

If you have:
1 What did you learn about your design that you like or
would do
different?
2 What was your vehicle?
3 Would you change about your design and how?
4 Do you use a fire extinguisher?
5 What to you fill the extinguisher with?
6 What should I look for in buying an extinguisher?
7 What do you pay to get it refilled?

Thanks for the help and insight ahead of time.
-tony
--
========================================================
Tony Wayne Those that can, do.
wayne@pen.k12.va.us Those that understand, teach.

I believe that Dick and Rae at VMI did a demonstration of
this kind with a carbon dioxide fire extinguisher. I
believe that the cart used was very basic--a seat attached
to a small frame with four wheels--good bearings are
important. Probably the physics department at VMI can give
you more details. WBN




Steven T. Ratliff
Associate Professor of Physics
Northwestern College
3003 Snelling Av. N.
Saint Paul, MN 55113-1598

Internet: stratliff@nwc.edu (or str@nwc.edu)