Dynamics

Newton's Second Law Calculator

F = m a
Calculator
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Writing tips
  • Use * for multiplication: write G*M*m, not GMm.
  • Use ^ for powers: r^2 means r squared.
  • After a /, wrap the whole denominator in brackets: 1/(4*pi*eps0) puts everything in brackets below the line.
  • Scientific notation: write 6*10^-7 or 6e-7 — both mean 6×10⁻⁷.
  • Functions need brackets: sqrt(2*G*M/r), sin(x), ln(x).
  • Define the result with =: e.g. F = G*M*m/r^2 so the answer is labelled F.
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This calculator applies Newton's second law of motion, F = ma. Enter an object's mass and acceleration to find the net force acting on it.

What the symbols mean

Worked example

A 1,000 kg car accelerating at 3 m/s² requires a net force of 1000 × 3 = 3,000 N.

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