Re: pinhole Physics lesson?

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From: Steven Eiger (eiger@montana.edu)
Date: Sun Apr 15 2001 - 12:52:21 PDT 

Message-Id: <l03102800b6ffab5a4f32@[153.90.150.107]>
Date: Sun, 15 Apr 2001 13:52:21 -0600
From: Steven Eiger <eiger@montana.edu>
Subject: Re: pinhole Physics lesson?

I was once really fooled by this, and I still may be. Conservation of
momentum would have you believe that the faster approaching ball would
leave slower, but kinetic energy is also largely conserved, so my guess is
that the faster pitched ball rebounds off the bat quicker and the bat does
more slowing down to keep momentum constant. Steve

>Pinholers,esp you Physics teachers- I keep hearing
>Mike Krucoe (sp?) one of the baseball Giants
>announcers say that a batted ball traveled further
>because the pitcher threw it faster..so heres the
>question, or experiment: suppose you set up a T (like
>the little leaguers use) and set a baseball on it. You
>use a machine to hit the ball so its struck with the
>same force every time. Then you use a pitching machine
>and set it so it throws at the same velocity every
>time. Will the thrown ball,when hit by the bat, travel
>further than the ball struck from the T? thanks Dan

Steven Eiger, Ph.D.

Department of Cell Biology and Neuroscience and the WWAMI Medical Education
Program
PO Box 173148
Montana State University - Bozeman
Bozeman, MT 59717-3148

Voice: (406) 994-5672
E-mail: eiger@montana.edu
FAX: (406) 994-7077

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