Given the clearance between the golf ball and the
cylinder, I am guessing Bernoulli's principle may
be at work here. Basically, it states that the
higher the air (in this case) speed, the lower the
pressure. I am not sure how exactly it would work
in your case, given the geometry of the air flow
past the golf ball within the cylinder. If the
cylinder is transparent, would it be possible for
you to send me a photograph (or better yet, a
small .avi movie)?
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