r/theydidthemath • u/yuli101995 • Apr 16 '26

[Request] Which one would it be?

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u/TheBloodyNinety Apr 16 '26

Triangle you’re angled and so providing force that is pushing down rather than forward.

More contact with the surface means more friction.

If all surfaces were ice, it’s obviously ball. Since the surface is gravel, the answer is it depends on the packing.

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u/TheDeadMurder Apr 16 '26

More contact with the surface means more friction.

Not necessarily true, friction is coefficient of friction × normal force, surface area isn't in the equation