Springs

Science

Definition

Springs are elastic devices that store potential energy when stretched or compressed and exert a restoring force proportional to their displacement from equilibrium. This behavior is described by Hooke's law and is the basis of simple harmonic motion.

Examples

  • A pogo stick using a spring to launch the rider upward
  • A car's suspension springs absorbing bumps in the road
  • A spring scale measuring weight by how far the spring stretches
Key Fact

Hooke's law: F = −kx; Elastic PE = ½kx²

Related Terms

Restoring force Potential energy Oscillation period Pendulums

Study This Concept

Practice springs with free review games in these units:

AP Physics 1 Unit 6: Simple Harmonic Motion