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Re: .Bernoulli and curve balls.



Try this out:

Cut the inner cardboard cylinder from the inside of a paper towel roll to
form a trough. Leave a handle by not cutting all the way to the end. Then
place a styrofoam ball in the trough, and throw the ball using the trough
which will cause the ball to spin.

The quality of curves you can get using this simple apparatus is amazing.
It is quite easy to study the relationship between the spin and the curve.
Try it out!

John Park