Centripetal Force Calculator
Centripetal force magnitude = mass × speed² / radius.
Open toolFriction Force Calculator
Find friction magnitude μN from a coefficient and normal force. For kinetic friction, use the kinetic coefficient.
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Enter the inputs, then select Calculate.
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How Friction Force Calculator works
Find friction magnitude μN from a coefficient and normal force.
For kinetic friction, use the kinetic coefficient. For static friction, this is the limiting magnitude, not necessarily the actual force. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How to use Friction Force Calculator
Follow the labelled inputs.
Enter friction coefficient
Replace the example with friction coefficient. The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set normal force (n). For kinetic friction, use the kinetic coefficient.
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Friction Force Calculator
Check the supplied example
The starting example produces 30 N. Find friction magnitude μN from a coefficient and normal force.
Use your own inputs
Read the labels for friction coefficient and normal force (n). For kinetic friction, use the kinetic coefficient.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Find friction magnitude μN from a coefficient and normal force.
For kinetic friction, use the kinetic coefficient. For static friction, this is the limiting magnitude, not necessarily the actual force. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
Supported input and limits
Check the stated scope before you run it.
For kinetic friction, use the kinetic coefficient. For static friction, this is the limiting magnitude, not necessarily the actual force. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolFriction Force Calculator: common questions
Answers about using Friction Force Calculator and understanding its results.
What inputs and assumptions apply?
For kinetic friction, use the kinetic coefficient. For static friction, this is the limiting magnitude, not necessarily the actual force. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How can I save the result?
Copy result copies the displayed text. Download saves the same text as a TXT file. Processing runs in this browser without an account.
Calculate with your input
Check the calculated result, then copy or download it.