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Coin rotation paradox

The coin rotation paradox If you enjoyed this video please sign up to my substack newsletter to be notified of new videos and articles: https://graphicmaths.substack.com Imagine we have 2 coins. The radius of the larger coin is 3 times the radius of the smaller coin. We roll the smaller coin all the way around the edge of the larger coin, without it slipping. The question is, how many times will the smaller coin rotate as it rolls around the edge of the larger coin? The result is quite surprising, and this video explains why. Related articles: Coin rotation paradox: https://graphicmaths.com/recreational... Links: Substack: https://graphicmaths.substack.com to be notified about new videos. Website: https://graphicmaths.com text versions of these videos. Twitter:   / graphicmaths   This video was created using generativepy, a free and open source Python library for creating mathematical art and animations, available from https://github.com/martinmcbride/gene...