EngiRef / Mechanical Engineering Formula

Friction Force

Friction Force: Friction force between surfaces. A Statics formula in mechanical engineering. Variables Fᶠ, μ and N, each with SI and imperial units.

Statics

Specification

Name
Friction Force
Discipline
mechanical
Category
Statics
LaTeX
F_f = \mu N
Description
Friction force between surfaces
Conditions
μ is coefficient of friction (static or kinetic)
Can solve for
Fᶠ, μ, N
Tags
friction, force, coefficient, normal

Variables

Variables for Friction Force
SymbolNameUnitSi UnitImperial Unit
FᶠFriction ForceNNlbf
μCoefficient of Friction - - -
NNormal ForceNNlbf

Common questions

What is the Friction Force formula?
Friction force between surfaces. It sits under Statics, Mechanical engineering in the EngiRef reference.
What do the symbols in the Friction Force formula mean?
In Friction Force, Fᶠ is friction force in N; μ is coefficient of friction; N is normal force in N.
When does the Friction Force formula apply?
Friction Force holds under this condition: μ is coefficient of friction (static or kinetic).