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Re: angular momentum transfer?

Hi Sam,

Great. I have a tap & die set here. Ok, I can proceed according to those
instructions, thanks very much.

BTW, is there a reference? What is the demo called? Are there any pictures?
And what is the physics teacher's explanation, I mean why does it happen?
Anyone? Thanks very much.


At 04:23 PM 8/27/2004, you wrote:
Join two bicycle wheels along the same axle. I machined a connector
from aluminum. You'll need to buy a special tap for the axle threads - I
don't remember the size but you can measure your axle. The tap is
readily available from shop catalogs like MSC. You don't need to add
lead to the rim.


Colin Quinney wrote:

>I joined yesterday. I am searching for some information. I am a fairly new
>student of physics, now retired, and I am presently searching for a
>reference to a classroom demo that shows two wheels on a short axle, where
>one wheel with lead (Pb) rim is spun up- and another wheel close by (on
>the same axle) responds to the momentum change of the first wheel with a
>small reverse rotation. I wish to replicate this so that I may study the
>phenomena. Neither my text books nor Google however give a reference or
>shows this demonstration. I'm confident however that a demo of this sort is
>out there somewhere since a retired physics professor originally told me
>about it. If anyone could please advise or give a science book reference or
>to a correct Google search term, I would be most appreciative. Thanks.
>Best Regards,