[Spridgets] brake physics part 72

rrengineer @dslextreme.com rrengineer at dslextreme.com
Mon Oct 5 18:28:19 MDT 2009


Jay,
     Thanks for that link.  It's the funniest site I have seen in a long
time.  And useful too!  You guys have me laughing so hard I got tears in my
eyes.  As usual, Jay is the voice of reason, or is THAT bullshit?
Mike MacLean
60 Sprite
56 BN2

On Mon, Oct 5, 2009 at 4:34 PM, Jay Fishbein <jfishbein at snet.net> wrote:

> For those standing on the sidelines who want to participate but feel
> inhibited, use this link: http://www.dack.com/web/bullshit.html
>
> No need to thank me, I matrix and maximize vertical extensible users all
> the
> time.
>
> Jay Fishbein
> Walllingford, CT
>
>
> --- On Mon, 10/5/09, Jim Johnson <bmwwxman at gmail.com> wrote:
>
> From: Jim Johnson <bmwwxman at gmail.com>
> Subject: Re: [Spridgets] brake physics part 72
> To: "Ron Soave" <soavero at yahoo.com>
> Cc: "Spridgets" <spridgets at autox.team.net>
> Date: Monday, October 5, 2009, 7:03 PM
>
> Yup. I remember all that from the dark dusty days of engineering physics.
> However, the body undergoing centripetal acceleration is not undergoing an
> even acceleration....  You have to get into partials to really describe the
> scale of motion I'm talking about. You know... frame of reference is now
> "inside" the car, not viewing it from the outside of the system?
> Surely those moments would be non-linear, eh? Partials would describe the
> very very small accelerations. This is probably an eulerian vs lagrangian
> argument...
>
> Cheers!!
> Jim
>
> On Mon, Oct 5, 2009 at 3:29 PM, Ron Soave <soavero at yahoo.com> wrote:
>
> > --- On Mon, 10/5/09, Jim Johnson <bmwwxman at gmail.com> wrote:
> > > Ron - instantaneous or "Shock" forces should fall
> > > into the realm of turbulence, yes?
> >
> > Actually, I was talking about mechanical shock, which is an extremely
> rapid
> > acceleration or deceleration. In another definition, it is also a variant
> of
> > impact (force delivered over time as time goes to zero). Also  you can
> think
> > of it as the first derivative of acceleration (change in acceleration
> with
> > time) or third derivative of position (d^3X/dT^2), which is truly defined
> > (and GOD it pains me to type this) as a "jerk".
> >
> > Let the pigeons loose,
> > Ron
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