As of March 15, 2006 I'm still in the process of writing
a detailed Web article explaining what "Swing Weight" is and why moment-of-inertia matter more than the actual weight of a bat, at least as far as the swing speed and the balanced feel during
the swing. But in the meantime, I have just submitted a
paper entitled "Swing Weight of a Softball Bat" for publication in The Physics Teacher.
I've included a link to an electronic (PDF) version of this paper here in order to provide you with something to read while I try to
finish the larger, more detailed Web article.
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