Re: [Phys-l] velocity-dependent mass (or not)

[Moses Fayngold <moshfarlan@yahoo.com>]

 Sorry for the stupid typo in my previous message. Here is the corrected one.

It is true that relativistic mass is essentially relativistic energy.
> But it is also true that it can be independently determined as MASS
> (measure of inertness - ratio of external force to resulting   
> acceleration when the force is perpendicular to velocity) by an  
> executable experimental procedure, e.g., from known charge q,
> velocity v, and radius R of the circle traced out by a particle in a  
> known magnetic field B perpendicular to the plane of the circle.
The outcome qBR/v = qB/w turns out to depend on velocity, or, 
which is the same, the cyclotron frequency w depends on v. The latter
is the signature of velocity-dependent mass.

That's it! 

 Moses Fayngold,
 NJIT


--- On Tue, 6/23/09, chuck britton <cvbritton@embarqmail.com> wrote:

From: chuck britton <cvbritton@embarqmail.com>
Subject: Re: [Phys-l] velocity-dependent mass (or not)
To: "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>
Date: Tuesday, June 23, 2009, 10:27 AM

Nomex undies have been donned!!


-l