8 ms·
The way I think about it is imagine the circle in the middle is very tiny compared to the circle that rolls.
by TarasBob 3y ago
The way I think about it is imagine the circle in the middle is very tiny compared to the circle that rolls.
- medler 3y agoI like this perspective as well. If the coin is rotating around a point (radius 0), the point on the coin edge touching the point will not move at all, yet the coin will make one rotation before returning to its original position.