Hooke's law

Gives the restoring force exerted by an elastic spring as proportional to its change in length, with the force opposing the displacement. It is used for small deformations within the elastic limit of springs and similar materials.

F = -k\Delta l

What the symbols mean

restoring force exerted by the spring (N)
spring constant, a measure of stiffness (N/m)
change in length of the spring from its rest length (m)

About this formula

  • FieldPhysics
  • TopicElasticity
  • LevelHigh school
  • Also calledHooke's law spring force, force on a spring, spring force formula, elastic force proportional to displacement, spring constant force law, linear elasticity law
  • SourceWikidata Q170282

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