Registered: 23/03/01
Posts: 1906
Loc: San Jose, CA
Quote:
Originally posted by BlueSky: Well, if the wheel moves, something is causing that, correct? It could be a guy pulling his kid in a Radio Flyer or a soap box derby racer coasting, but if the wheel is moving, it is covering a given distance per rotation. If that distance is negated by a moving surface underneath that moves an equal distance in the opposite direction, the vehicle will not move relative to its surroundings.
So, you're saying that a guy pulling his kid in a radio flyer will be unable to keep pulling the wagon if the wagon suddenly rolls over a conveyor belt?