🚀 go-pugleaf

Marc wrote:

> Mike Sweeney <msweeney@nospam.lr.net> wrote:
> >Marc wrote:
> >> joelga@pebble.org (Joel Garry) wrote:
> >> >On Mon, 06 Jul 1998 00:12:25 GMT, E. Faubion <in@the.sig> wrote:
> >> >>"Mark B." <spam_*this*_@see.my.sig> wrote:
>
> >> >>>Earl, face the facts -- your one-size-fits-all c.o.f. model is
> >> >>>*PURE BULLSHIT*.
>
> >> >>You really don't understand the problem do you?  The c.o.f. is a
> >> >>variable determined from testing based on the vehicle and surface in
>

<SNIP>

> In your post above, did you say anything contrary to my statement that
> CoF is variable but not a variable, despite Earl's statements to the
> contrary?  Do you agree with Earl's statement that "The c.o.f. is a
> variable..."?
>
> Marc
> For email, remove second "y" from Gumbyy@ticnet.com

Yes.  I thought it would have been obvious to anyone who could read English.
Guess not.

CoF is the ratio of the force necessary to slide an object at uniform speed on
a surface to the pressure of the object against that surface.

The manner in which it is variable is that the surfaces change.  A material
made of sharp-edged stones would have a higher resistance, glare ice would have
a very low resistance.

Here is a list of things that influence DRAG FACTOR:

1. Road surface material (see above)
2. Length of slide (longer slides decrease the friction because the tire melts
and smears more easily.)
3. Material of tires (makes much less difference than road surface)
4. Chains (help on ice, hurt on dry surfaces)
5. Tread (on dirt and mud and other "loose" surfaces)
6. Temp. of road surface and air (hot weather, longer stops)
7. Air pressure (only slight variances)
8. Weight of vehicle (only before lockup)
9. Direction of slide (slight variances)



M