Coefficient of Friction Calculator

Enter the normal force and friction force into the coefficient of friction calculator below. Evaluate the coefficient of friction between two surfaces.

Coefficient of Friction Calculator

Coefficient of Friction Formula

The following formula is used in the coefficient of friction calculator above:

u = F / N

  • Where u is the coefficient of friction
  • F is the force due to friction
  • N is the normal force

This can be used in both static and kinetic friction cases. In a static friction case, the force applied, P, will never exceed the frictional force F. Otherwise the object would be in motion and this would be a kinetic friction case.

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