Date: Sat, 4 Jun 2005 21:37:47 +0200 From: "MH" <nomailnospamere.no> Subject: Re: Re: Funny quote about the SAAB 9-3 based Cadillac BLS
> Where do some people get the idea that a narrow track > ( or Tread) makes a better snow tire? Because the >tension< is higher. > Have they forgotten the elementary formula that friction + the > coefficient of friction X the force(that is the mass of the car) > normal to the surface. Yes, correct f = F/N, coefficient of friction = Fricton (force) / Normal presure (weight/mass of car) or F = f x N > It is independent of the area in contact. The bigger that area > the more the force (mass) is spread out. Exactly, but friction F is a force, working on an area; the larger the area the smaller the pressure, as pressure = F / A Why do people use studded tires on ice? What knife cuts better; a sharp one (with small A) or a dull one (with larger A) ? -- MH '72 97 '77 96 '78 95 '79 96 '91 900i 16 http://go.to/saab96
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