Posted by: Al_Oha (p3d0n6@hawaii.rr.com) on Fri Apr 2 09:42:50 2010

> > Great Post and answers...just found this site and it is very intriguing......but in regards
to the information in regards to bat mass vs speed......am i correct in saying that a 30 oz
bat swung at 68 mph will cause the ball to travel further than a 28oz bat swung at 68
mph? Of course all other things being equal?
> >
> > If this is the case than do you know what the trade off would be in using a heavier bat
vs the bat speed lost by doing so? For example...if you could swing a 33 0z bat at 65 mph
or a 30 oz bat at 68 mph, which would be the more desirable option....all else being
equal?
> >
> > Thanks,
> > Dave
> >
> >
> >
> >
> > >
> > > Also another thing to take into consideration is the size of the bat. But overall, it is
more important to generate bat speed than it is to get bat mass. A ball will travel farther
when a heavier bat is used if a hitter was able to use a heavy bat plus swing with the
same velocity of a light bat while hitting in the center of percussion. The problem for
most mortals is that they cannot swing a heavier bat as fast. I don't know anyone that
can swing a 42 ounce bat as fast as a 33 ounce bat, including Barry Bonds.
> > >
> > > There is so much more. But I hope this answered some of your questions.
> > >
> > > My Best,
> > >
> > > Joe Hernandez
>
> I'm thinking that the ball doesn't care.
>
> Does the ball know the weight of the bat?
> Or does the ball react to the density of material, and the speed, or angular velocity, with
which the bat impacts it?
>
> More hitter strength is required to accelerate a heavier vs. lighter bat to a given speed.
>
> It would be interesting to see a study on ball response physics to impact variables.
> Maybe Jack can help with this.
>
> Jim D

Check out website: http://www.physics.usyd.edu.au/~cross/baseball.html