"J. Grimbert" wrote:

> The belt are fine for modeling infinite tension, but in
> reality, usually, one of the 'line' between the wheels is not
> straight: it is curved, due to the gravity and the lesser
> tension between the motored wheel and the motor wheel.
> It may even happen on loose belt, that both 'line's are curved
> when not moving, and the direction of the movement, as well
> as the driving wheel will decide which line go straight at
> move time.

If you were going for physical accuracy you would have a prenty daunting
task:
http://mathworld.wolfram.com/Catenary.html

--
David Fontaine     <dav### [at] faricynet>     ICQ 55354965
Please visit my website: http://www.faricy.net/~davidf/

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