Class 11 Physics simulations · Oscillations

Coupled pendulums

Join two pendulums with a weak spring. Energy slowly swaps between them in beats.

Open the simulation

What to notice

Start one pendulum swinging: it gradually stops while the other takes over, then the transfer reverses.

Key relation

ω₁ = √(g/L), ω₂ = √(g/L + 2k/m), T_beat = 2π / (ω₂ − ω₁)

Try this

Make the spring weaker. Does energy transfer faster or slower?

What you can change

• Pendulum length: 0.5 to 2 m
• Spring constant: 0.1 to 5 N/m
• Bob mass: 0.2 to 2 kg

More in Oscillations

• Damped harmonic motion
• Driven oscillations and resonance
• Simple pendulum
• Energy exchange in SHM
• Displacement, velocity, acceleration
• Mass–spring oscillation
• Oscillating liquid in a U-tube
• Mass on a vertical spring

See all Class 11 Physics simulations or every Physica simulation.