Scattering of a baseball by a bat

A ball can be hit faster if it is projected without spin, but it can be hit farther if it is projected with backspin. Measurements of the tradeoff between the speed and spin for a baseball impacting a baseball bat are presented. The results are inconsistent with a collision model in which the ball r...

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Bibliographic Details
Published in:American journal of physics 2006-10, Vol.74 (10), p.896-904
Main Authors: Cross, Rod, Nathan, Alan M.
Format: Article
Language:English
Subjects:
Baseball
Physics
Scattering
Weights & measures
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Summary:A ball can be hit faster if it is projected without spin, but it can be hit farther if it is projected with backspin. Measurements of the tradeoff between the speed and spin for a baseball impacting a baseball bat are presented. The results are inconsistent with a collision model in which the ball rolls off the bat and instead imply tangential compliance in the ball, the bat, or both. If the results are extrapolated to the higher speeds that are typical of the game of baseball, they suggest that a curveball can be hit with greater backspin than a fastball, but by an amount that is less than would be the case in the absence of tangential compliance.
ISSN:0002-9505
1943-2909
DOI:10.1119/1.2209246