Where does the friction force equation F = μN come from?

scuddman · Jan 9, 2005

Where does the equation F (force of friction) = uN (Muu times normal force)
come from? How do you derive the u?

vincentchan · Jan 9, 2005

derive? it is a property of substance... the easiest way is doing an experiment...

Crosson · Jan 13, 2005

It comes from a good sounding phrase:

"The force of friction is proportional to the normal force"

This is translated into f = mN.

It isn't really worth anything to anyone, other then to show introductory students how complex phenomena can begin to be model. It is semi valid as a engineering rule, and good for teaching.

Where does the friction force equation F = μN come from?

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Where does the friction force equation F = μN come from?

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