Re: [Phys-l] old stuff--battleship momentum conservation.

[brian whatcott <betwys1@sbcglobal.net>]

Broadsides are fired under weigh for obvious reasons, and the big guns 
are not equally
disposed about the center of percussion. Which leads to a small turning 
moment, leading
to sensible track displacement after several seconds.

You're welcome

Brian W

On 2/3/2011 8:43 PM, Richard Tarara wrote:
> Check out...
>
> http://www.navweaps.com/index_tech/tech-022.htm
>
> in which there is, I believe, an explanation for the water disturbance along
> the whole length of the ship--the thing that bothered me.
>
> Rick
>
>
> Richard W, Tarara
> Professor of Physics
> Saint Mary's College
> Notre Dame, IN 46556
>
> FREE PHYSICS SOFTWARE
> www.saintmarys.edu/~rtarara/SOFTWARE.html
>
> -----Original Message-----
> From: chuck britton
> Sent: Thursday, February 03, 2011 9:22 PM
> To: Forum for Physics Educators
> Subject: Re: [Phys-l] old stuff--battleship momentum conservation.
>
> At 3:39 PM -0600 2/3/11, Jack Uretsky wrote:
> > Certainly there is a recoil.  The USS  Phillipine Sea (a carrrier) had an
> > early version of a night landing system.  The electronics were based on
> > vacuum tubes.  In those days the carriers of our class carried 5" guns for
> > air defense, so we happily put to sea for gunnery practice.  During gnnery
> > practice the tubes in the night landing system all shatttered.   The year
> > was 1948,
> >   Regards,
> Can't avoid a recoil.
> The ship feels it as a shake but not a (measurable) translation.
> Not even a significant 'heel'.
> ________________________________