##  [Coulomb Friction Law](/coulomb-friction-law) 

  ##  [Coulomb Friction Law](https://engineering.quantumdictionary.io/coulomb-friction-law-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An empirical law for macroscopic dry contact stating that the maximum tangential friction force (static) resisting incipient sliding is proportional to the normal contact force through a coefficient of friction μ_s (F_max = μ_s N); once sliding occurs the kinetic friction force is typically lower, approximated by μ_k N.