Physics Help Forum unit of μk
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 Sep 21st 2008, 07:09 PM #1 Member   Join Date: Sep 2008 Posts: 39 unit of μk Hello everyone, Could you please tell me if this is correct? What is the unit of μk? My attempt: μk=Ffriction/N Thank you very much
 Sep 23rd 2008, 02:12 AM #2 Senior Member   Join Date: Apr 2008 Location: HK Posts: 886 Could you write the equation in a clearer way? I don't quite understand what you mean. Do you mean that friction=k(Normal force)? where k is the coefficient of friction
Sep 23rd 2008, 05:28 AM   #3

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 Originally Posted by chocolatelover Hello everyone, Could you please tell me if this is correct? What is the unit of μk? My attempt: μk=Ffriction/N Thank you very much
Friction is a force, so it has the unit N. The normal force is a force, so it also has the unit friction. The unit N/N = 1 is unitless, so $\displaystyle \mu _k$ is unitless.

-Dan
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 Tags μk, unit