this post was submitted on 14 Mar 2026
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it's pi day (pieguy.sdf.org)
submitted 2 weeks ago* (last edited 2 weeks ago) by pieguy to c/funhole
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You are legally required to consume some form of pie today.

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[โ€“] jdr@lemmy.ml 2 points 2 weeks ago (1 children)

Tricky, right?

It's because there is "friction" and the part of the circle touching the line can't move relative to it, and so you get that "cusp" shape.

Maybe someone else can give a better explanation, I haven't had any coffee yet.

[โ€“] pmjv 2 points 2 weeks ago

oh right, i see it now. in the original post, the line goes through the ball! thanks!