Re: [Phys-l] zeroth order and first order

[John Denker <jsd@av8n.com>]

On 11/08/2007 06:40 PM, LaMontagne, Bob wrote:
> What if we consider tires with tubes? The "bead" does not have slope
> where it touches the rim, it simply sits parallel to the vertical
> part of the rim. 

I'm not sure I understand what that's trying to say.
Perhaps a picture or sketch would help.

If that means to say what it seems to say, then I don't think
that's true.  Every rim I've ever seen(*) has some sort of 
retainer ... variously called a seat or a shoulder or a flange 
or a rib ... something to engage the bead (from one side or
the other).

> Is the car still suspended by the "bead"?

In every case I've ever seen(*), yes.

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(*) Except of course for sew-ups, which obviously are in a class
by themselves.