Springs & Hooke's Law

A spring's restoring force is proportional to its displacement from equilibrium (Hooke's Law), producing simple harmonic motion.

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Overview

Hooke's Law: F = -kx, where k is the spring constant and the negative sign shows the force always points back toward equilibrium. Period of a mass-spring system: T = 2π√(m/k) — independent of amplitude.

Practice Quiz

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If the length of a simple pendulum is quadrupled, how does its period change?

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