Spring constant from Hooke's law

The spring constant is the ratio of the magnitude of the restoring force a spring exerts to the magnitude of its displacement from equilibrium. It is used to characterise how stiff a linear spring is under Hooke's law, where the restoring force is F = -kx.

k = \frac{F}{x}

What the symbols mean

spring constant, stiffness of the spring (N/m)
magnitude of the restoring force exerted by the spring (N)
displacement of the spring from its equilibrium length (m)

About this formula

  • FieldPhysics
  • TopicClassical mechanics
  • LevelHigh school
  • Also calledspring constant formula, hooke's law spring constant, stiffness of a spring, force constant, spring stiffness formula
  • SourceWikidata Q338261

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