3 ms·
It depends on the viewer’s perspective. From the coin’s point of view it rotates three times, but to an outside viewer it rotates four times. I think the outsid
by medler 3y ago
It depends on the viewer’s perspective. From the coin’s point of view it rotates three times, but to an outside viewer it rotates four times. I think the outside viewer’s perspective is far more intuitive, so four is really the “most” correct answer to me.
- jncfhnb 3y agoPerhaps. But I think the most intuitive is noting that a coin’s perimeter should touch the other coin exactly one full time during a rotation.