Re: 4/3 problem resolution/Action-reaction paradox in pdf format

[David Rutherford <drutherford@SOFTCOM.NET>]

On Tue, 19 Jun 2001 08:41:27 -0700, David Rutherford
<drutherford@SOFTCOM.NET> wrote:

> On Tue, 19 Jun 2001 10:58:13 -0400, Chuck Britton <britton@NCSSM.EDU>
wrote:
> > At 10:54 PM -0700 6/18/01, David Rutherford,  you wrote about Re: 4/3
> > problem resolution/Action-reaction paradox in p:
> >
> >
> > This does not make a frame inertial!
>
> If the two electrons are initially travelling at constant speeds

Sorry, I forgot to say that the speeds are also equal in magnitude.

> in opposite
> directions (which they are in the CM frame) and the net forces on them are
> zero at all times, then the center of mass is inertial. Why do you disagree
> with that?
>
> > > Bob, I'm surprised at you :-). This is high school stuff. In the absence
> of
> > > external forces, since the net change in the momenta of the particles is
> > > zero in the CM frame, the motion of the center of mass of the particles
is
> > > constant (or zero), i.e., inertial.
> >
> >
> >
> > Please feel free to ignore this intrusion into your discussion.
> >
> > I dunno if this comment is relevant to the present exchange - BUT,
> > I've got to wonder if there is an assumption here (explicit or
> > implicit) that the net charge of the (relevant) universe is zero.
>
> I'm just assuming that the electrons are isolated from any external forces.
> They are an isolated system of two particles. I take it you've never heard
> of an isolated system of particles, before. It's very common to consider
> this kind of situation in physics.
>
> --
> Dave Rutherford
> "New Transformation Equations and the Electric Field Four-vector"
> http://www.softcom.net/users/der555
>
>
> If
> > so, then the 'field lines' of these two electrons are securely
> > attached to some (+) charge whose motion is unknown.
> >
> > If the net charge of the 'relevant' universe IS unbalanced, what CAN
> > we say about the E field(s) of these electrons????
> >
> > --
> >  .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
> .-
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> >      `-'     `-'     `-'     `-'     `-'     `-'     `-'     `-'     `-'
> > Chuck Britton                                   Education is what is left
> when
> > britton@ncssm.edu                               you have forgotten
> everything
> > North Carolina School of Science & Math         you learned in school.
> > (919) 286-3366  x224                            Albert Einstein,
> 1936