GGs;

It's what my high school physics teacher (ca. 1962) called the "fun"
formula: f=un.  Roughly, f is the is the amount of force required to move
the object, u (Greek mu) is the coefficient of friction (<1.0, no units), n
is the weight of the object.  The surface area is not a factor.  If the
weight were so concentrated that it deformed the surface (causing it to dig
in) or destroyed a lubricating boundary layer (changing u), then it would
become apples to oranges.  As I recall, there was a fair amount of
resistance to this concept in the class.

Steve
Kokomo

On Mon, Aug 6, 2012 at 5:07 PM, John Holladay <docholladay0820@g...>wrote:

> Not that I am in any way smarter that Leonardo Davinci, but I must
> comment.  If you have two objects of identical size and weight, then the
> one with greater surface contact has to have more friction, therefore
> meaning more resistance to sliding.  It may be minute, but there would have
> to be some additional resistance.
>
> Doc
>
>
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