Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: angular momentum transfer?

Coupled oscillators exchange energy, but for a balanced spinning wheel
there is no mechanism to counter rotate the other wheel , I don't think.
However, a wheel with an offcenter weight, so that the wheel will
swing like a pendulum, should couple the swing to the other wheel
via spindle nutations, I would think.

Brian W

At 04:11 PM 8/27/2004, you wrote:
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:
> >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
> >
> >

Brian Whatcott Altus OK Eureka!