Swing Weights of Baseball and Softball Bats

• Autores: Dan Russell
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 48, Nº. 7, 2010, págs. 471-474
• Idioma: inglés
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• Resumen

  • Baseball and softball bats are sold according to length in inches and weight in ounces.1Much to the consternation of players buying new bats, however, not all bats that weigh the same swing the same. The reason for this has to do with moment of inertia of the bat about a pivot point on the handle, or what the sporting goods industry refers to as swing weight.2�3A number of recent field studies4�7have confirmed that the speed with which a player can swing a baseball or softball bat depends more on the bats moment of inertia than on its mass. In this paper we investigate the moment of inertia swing weight of a variety of baseball and softball bats.