Static Friction Coefficient

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

static friction coefficientStatic friction coefficient, abbreviated as \(\mu_s\) (Greek symbol mu), a dimensionless number, also called coefficient of static friction, is the amount of force that resists motion that is on the verge of motion.


Static friction coefficient formula

\(\large{  \mu_s =   \frac {f_s}{F_n}  }\) 


 Units English Metric
\(\large{ \mu_s }\)  (Greek symbol mu) = static friction coefficient \(\large{ dimensionless }\)
\(\large{ F_n }\) = normal force \(\large{ lbf }\) \(\large{N}\) 
\(\large{ f_s }\) = static friction \(\large{ lbf }\) \(\large{N}\) 


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Tags: Coefficient Equations Friction Equations