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World 11 · Springs and pendulums: period, energy and resonance · 9 min · PRO

Resonance: driving a spring

Damping, steady amplitude and the resonance peak

PRO · Forces & Motion

World 11: Springs and pendulums: period, energy and resonance is part of PRO

The first world of Forces & Motion is free. PRO opens the other 50 lessons in 11 worlds — simulations, quizzes and all.

  • Spring or pendulum: what sets the period?
  • Energy back and forth, and big swings
  • Coupled pendulums: handing the energy over
  • Rolling race: why shape beats mass
  • Why doesn’t the spinning wheel fall?
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