Hooke's Law Calculator

This calculator finds the missing variable in the Hooke's Law equation (F = kx) when two of the variables are known.

How It Works

This calculator is based on Hooke's Law, which describes the elasticity of springs.

The Formula

The formula used is:

F = kx

  • F is the magnitude of the restoring force exerted by the spring.
  • k is the spring constant, a measure of the spring's stiffness.
  • x is the displacement or change in the spring's length from its equilibrium position.

Note: You may see the formula as F = -kx. The negative sign indicates that the restoring force is in the opposite direction to the displacement. This calculator deals with the magnitudes of these variables.