Friction Force Calculator (f = μN)
Friction Force Calculator (f = μN)
Friction force resists motion between two surfaces in contact, proportional to how hard the surfaces press together (the normal force) and how rough they are (the coefficient of friction). Choose which quantity you want to solve for, enter the other two known values, and this calculator computes the missing one.
- The core formula is f = μ × N, so a coefficient of friction of 0.3 with a normal force of 500 N gives a friction force of 150 N.
- Higher coefficients mean rougher surfaces - rubber on dry concrete might be around 0.6-0.8, while ice on ice can be as low as 0.03.
- This calculator uses one coefficient generically - in practice, static friction (before motion starts) and kinetic friction (during motion) usually have slightly different coefficients, with static typically being higher.
How do I calculate friction force?
Multiply the coefficient of friction by the normal force: f = μ × N.
What is the friction force with μ=0.3 and a normal force of 500 N?
f = 0.3 × 500 = 150 N.
Friction Force Calculator (f = μN)
Friction force resists motion between two surfaces in contact, proportional to how hard the surfaces press together (the normal force) and how rough they are (the coefficient of friction). Choose which quantity you want to solve for, enter the other two known values, and this calculator computes the missing one.
- The core formula is f = μ × N, so a coefficient of friction of 0.3 with a normal force of 500 N gives a friction force of 150 N.
- Higher coefficients mean rougher surfaces - rubber on dry concrete might be around 0.6-0.8, while ice on ice can be as low as 0.03.
- This calculator uses one coefficient generically - in practice, static friction (before motion starts) and kinetic friction (during motion) usually have slightly different coefficients, with static typically being higher.
How do I calculate friction force?
Multiply the coefficient of friction by the normal force: f = μ × N.
What is the friction force with μ=0.3 and a normal force of 500 N?
f = 0.3 × 500 = 150 N.