Re: wave momentum

["Rauber, Joel Phys" <RAUBERJ@MG.SDSTATE.EDU>]

In this example or the previously posted example, if you choose a small
enough (Delta time) I think you would abscribe a momentum change.  Or assume
the last ball is not in a gravitational, starts at rest and is not connected
to anything (never mind how you achieve this, buy the necessary equipment at
the massless string and pulley store).  then that ball will achieve a net
change in momentum and I would ascribe it as a momentum transferred.

And BTW, I don't believe phonons do not involve transport of momentum.

Joel Rauber
 ----------
From: James McLean
To: PHYS-L
Subject: Re: wave momentum
Date: Friday, March 12, 1999 11:31AM

brian whatcott wrote:
> When I see an 8 ounce chrome-plate ball lurch forward, I see a movement
> I can associate with momentum.
You must be referring to a demo that I'm not familiar with.  Could you
describe it in more detail?  Does the ball actually obtain a net
momentum change, or does it only lurch forward, then backward again.

 --
 --James McLean
jmclean@chem.ucsd.edu
post doc
UC San Diego, Chemistry