[Rickertsen2]

Originally Posted by Tristan Lall

Viscous friction, like drag in a fluid? I don't think many robots use systems where this would be a big concern. If you have oil-bath lubrication, or some fancy hydraulic coupling, this might factor in, but it's most likely safe to neglect for our robots. Perhaps you mean friction between wet or dry surfaces?

By viscous friction is mean friction that is porportional to speed rather than constant. I do not know whether or not this is a signifigant factor, but i saw it in other models so i included it for completeness.