On what kind of surface would a square wheel function the same as a round wheel?

(In reply to re(6): I dont know why but.... by levik)

Up until now I was more concerned with interpreting Dulanjana's solution than in whether it would work. You raise a good point,

But is it really necessaray for the corner of the tire to go all the way to the base of the "valley"? Once the next side of the wheel creates a viable tangent with the next hump, it takes over the burden. A round wheel can "skip over" a valley which becomes too narrow when a new point makes contact with the next section.

Posted by TomM on 2002-11-20 17:42:42