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[Phys-L] Re: Gear suppliers



Dwight K. Souder wrote:
Can anyone recommend a good set of gears that can be used in my high school
Physics/Advanced Physics classes? I'm looking for something that is durable
and can be easily interchanged to see the effects of the different
arrangements.

Have you considered bringing a 21-speed bicycle to class?

Bicycle gears meet the definition of gears, and they can
be easily interchanged.....

Also the relevance to students' lives is pretty obvious.
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