Kinetic Friction
A simple dry-friction model estimates sliding resistance from normal force and a friction coefficient.
Kinetic Friction
Forces · 2 inputs
How to use this calculator
- Enter coefficient in ratio.
- Enter normal force in N.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Choose a system boundary and a positive direction before entering measured values. Introductory equations deliberately leave out some real-world effects. If the setup has changing acceleration, drag, losses or nonuniform properties, first decide whether the simplified model is a useful approximation.
The coefficient is empirical. Static friction and rolling resistance use different models.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
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