[ODE] Funny Friction problems

[Konstantin Voloshin]

Hello

"...
Q: How do I stop things from rolling off into infinity, or pendulums from
swinging forever?
A: ODE models a universe with frictionless hinges and no rolling friction,
so problems like those are fairly common. The solution is to apply a force
to simulate rolling friction or aerodynamic drag.
..."

You can find little more details here:

http://q12.org/cgi-bin/wiki.pl?RollingFrictionOrAerodynamicDrag

VolK
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