Is it possible for a fast pitch softball pitcher to throw a

Is it possible for a fast -pitch softball pitcher to throw a true \"rise -ball\"? A rise -ball elevates during flight due to the Magnus effect, not just because it left the pitcher\'s hand with an initial velocity having a positive vertical component. Use fluid mechanics computations to justify your answer, and you may have to look up some dimensions and reference values on-line (show your sources).

Solution

If the ball is thrown in such a way that an observer sitting in the left side of the pitch sees the ball to be rotating in a clockwise sense, the air velocity above the ball will be more than that below the ball which creates a pressure difference and hence an upward lift force acts on the ball.

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