Re: i,j,k things

[Joel Rauber <Joel_Rauber@SDSTATE.EDU>]

Glenn wrote:
> I want my students to know from the start that they can solve
> Newtonian
> mechanics problems using any coordinate system (any nonaccelerating
> system) they like, but a smart choice of coordinate system
> will make the
> problem easier than otherwise.

I must point out that the restriction to non-accelerating reference frames
is unnecessary.  One can solve Newtonian Mechanics problems utilizing
accelerating reference frames; just remember to include on the sum of the
forces side of the equation the so-called, "inertial force terms", I say
with trepidation, not wanting to restart that thread.

Note: others refer to those terms as "psuedo-force terms", others call them
"fictitious force terms".  Whatever we call it, we know how to do it. Hence
the restriction is unnecessary

Joel Rauber