Spring Force (Hooke's Law) Calculator
Spring Force from Constant & Displacement
Spring Constant from Force & Displacement
Formula
F = -kx, where F is the spring force in newtons, k is the spring constant in N/m, and x is the displacement from equilibrium in meters. Elastic PE = ½kx².
Frequently Asked Questions
What is Hooke's Law?
Hooke's Law states that the force exerted by a spring is proportional to its displacement from equilibrium: F = -kx. The negative sign indicates the force is a restoring force that opposes the displacement.
When does Hooke's Law break down?
Hooke's Law is valid only within the elastic limit of the material. Beyond this limit, the material deforms permanently and the relationship between force and displacement is no longer linear.
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