Whirling wheel

From: Cheng-Hsin Chang (chengjoe@ccnet.com)
Date: Mon Jan 18 1999 - 09:43:42 PST

Dear Ex.,
        For a school science project in the 7th grade, I am trying to measure
how fast different yoyos spin. I need to but a whirling wheel to do this
and some information on the math behind a whirling wheel. Could you
suggest any resources? Thank you,
                                Erek Mullin (chengjoe@ccnet.com)

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