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5 votes
1 answer
274 views

Brachistochrone problem with a limited slope angle and height

I'm trying to find the path of least time for a hollow sphere (a ping-pong ball) to roll from one point to another through an curve of interpolated points. The main problem here is that the ball isn't ...
Marcel's user avatar
  • 151
2 votes
2 answers
7k views

Curved Slope faster than linear?

So I saw this gif the other day, and was wondering, is this real or fake? And supposing there is no energy dissipated by the friction, why does such thing occur?
Mr.Robot's user avatar
  • 133