Re: pinhole Awesome Inquiry: Forces and Motion?

From: jleet1972@netzero.com
Date: Thu Sep 16 2004 - 16:26:25 PDT

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From: "jleet1972@netzero.com" <jleet1972@netzero.com>
Date: Thu, 16 Sep 2004 23:26:25 GMT
Subject: Re: pinhole Awesome Inquiry: Forces and Motion?
Message-Id: <20040916.162655.25202.858506@webmail22.lax.untd.com>

A couple of nice demos for circular motion:

1. Cut a wedge out of a pie tin.
2. Place the pie tin on an O/H.
3. Ask the kids to predict which direction a marble will roll out of the pie tin if you roll it around.
4. Roll the ball out of the tin.
5. It should go straight.

Another,
1. Again with a plate, cut three holes (equidistant apart) and tie strings to each, coming together at the top, forming one handle.
2. Place something--a cup of water perhaps--on the plate, and swing the plate around. The kids will be quite amazed that the cup will not fall off.

Hope these work,

Take good care

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