Re: Friction

[Sam Sampere <sampere@suhep.phy.syr.edu>]

I guess I'm confused on the difference of slipping on pavement or 
slipping in water.  In either case, the acceleration of the car is less 
than optimum.  If some 'slippage' were desireable, why do antilock brakes 
work?  The sensors (located on each wheel) tell the computer that the 
wheel stopped turning.  The computer decreases the pressure in the brake 
piston so the wheel can freely turn.

Sam


On Sun, 14 Jul 1996, David Dockstader wrote:

> Mark,
> Wet is a whole different story.  My discussion of tires was intended only
> to address the question of clean dry pavement.  If you put water between the
> tire and the road it becomes a problem in viscosity.  Your observation is
> true and it is the reason why they stop races in the rain.