Coupled Pendulum

Explore how gravity sets a low-frequency cutoff on a chain of coupled pendulums — evanescent decay below cutoff and traveling waves in the passband.

Everything you need to explore wave physics

Live simulation

Adjust pendulum count, length, and coupling while the chain runs in real time.

Gravity cutoff

See how f_c = √(g/L)/2π separates evanescent modes from propagating waves.

Driven & pulse modes

Compare sinusoidal drive against an end displacement pulse with amplitude plots.

Passband envelope

Overlay theoretical decay or propagation against measured peak amplitudes.

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Physics simulation runs entirely in your browser.