Re: Newton's 3rd law? was Re: inertial forces (definition)

[Bob Sciamanda <trebor@VELOCITY.NET>]

----- Original Message -----
From: JACK L. URETSKY (C)1998; HEP DIVISION, ARGONNE NATIONAL LAB ARGONNE,
IL 60439 <JLU@HEP.ANL.GOV>
To: <PHYS-L@lists.nau.edu>
Sent: Saturday, October 23, 1999 6:59 PM
Subject: Re: Newton's 3rd law? was Re: inertial forces (definition)


> Dear Bob-
>         Not so fast, my friend:
> You write
> *************************************************
> The centripetal component of the acceleration is v^2/r .
> The centripetal component of the net force is mv^2/r .
> ***************************
>         Au contraire.  The quantity mv^2/r is the mass times the
acceleration
> which is numerically equal to the applied force (contact or one of the
forces
> that act at a distance).


Touche' ancore!  I'll give you that, but
I was obviously merely correcting your statement:


> If the object is instantaneously moving on a curve with radius r along an
axis, with

> speed v perpendicular to that axis, then the acceleration on the right
side of the

*************
> appropriate equation is mv^2/r.
                                    ***
>                                        Regards, Jack

Bob

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor