Re: angular momentum transfer?

[sampere <sampere@PHYSICS.SYR.EDU>]

Sorry, I misread your description.  With the demo as I described, you
can show a zero angular momentum even though both bike wheels are
spinning.  This might work according to your description, but I think
frictional effects will dominate and the 2nd wheel will start spinning
in the same direction.  I'll try in on Monday,  I'm going home.

Sam

sampere 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.
>
> Sam
>
> Colin Quinney wrote:
>
>
>
> > Hello.
> >
> > 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,
> > Colin