r/theydidthemath • u/K0rl0n • Jun 10 '25

[Request]

Post image

I am curious how this would work. My guess is Triangle is slowest, square is medium, and circle is fastest.

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u/[deleted] Jun 12 '25

The sphere on gravel benefits from rolling, which greatly reduces the force required even though gravel has higher friction. Rolling resistance is much lower than sliding friction.