Free Friction Force Calculator
Calculate the friction force between surfaces using f = mu * N.
N
Friction Force
50.00 N
Friction Force vs Coefficient of Friction
Friction Force
Friction opposes relative motion between two surfaces in contact.
Formula
f = mu * N
where mu is the coefficient of friction (static or kinetic) and N is the normal force perpendicular to the surface.
Example Calculation
A 10 kg box on a flat floor has a kinetic friction coefficient of 0.5.
- 01Normal force N = m * g = 10 * 9.81 = 98.1 N
- 02f = mu * N
- 03f = 0.5 * 98.1
- 04f = 49.05 N
Frequently Asked Questions
Learn More
Understanding Newton's Laws of Motion
A comprehensive guide to Newton's three laws of motion. Learn about inertia, force and acceleration, action-reaction pairs, and how these principles govern everyday physics.