Quote:
Originally Posted by Fred Sayre
Wait, so when you are rolling forward and there is a sideways force, where is that force coming from? It is the motors. You don't get the applied force for free.
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You can get an applied force for free, but you can't get that force applied through a distance for free....then it would be work. Sideways force with no sideways velocity = no energy expended, and no work done, in that direction.
At least that's my understanding of physics. I could be wrong.
edit--think about walking...where's the force? where's the work getting done? where's the velocity?