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Re: .Bernoulli and curve balls.



My direct experience in balls curving is with ping-pong balls, where I recall that
lots of topspin seems to make the ball curve down onto the table.

I would say the top of the ball is travelling through still air faster that the center of
mass, and the bottom of the ball is travelling slower, so that the faster velocity on
top would a la bernoulli create lower pressure. This suggests that bernoulli would
predict that the ball would rise instead of fall.

Maybe in a ping-pong ball it's the drag forces which dominate.

--

Mike

-==============================================================
Mike Moloney moloney@nextwork.rose-hulman.edu
Dept of Physics & Applied Optics (812) 877 8302
Rose-Hulman Institute of Technology Terre Haute, IN 47803
http://www.rose-hulman.edu/~moloney/index.html