LogFAQs > #979455699

It would have to be two. If it just did one, the top of Washington's head would always be away from the eagle, which would be sliding instead of rolling. Then since the circumferences are the same, it would have to roll once in addition.

Or to think of it another way, if you drew a line the length of the circumference and rolled it along ng it would rotate once, then there's another rotation when the path is curved into a circle.