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Push the Swing

Let a swing fade, then push it in time. Find when the energy halves and when it grows most.

Physics · Class 11 · Damping and resonance · 5 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Fading swing: Damping: the amplitude falls as e^(−bt/2m)
  2. Half the energy: Damped energy falls as e^(−bt/m)
  3. After 15 swings: b from an energy drop: use the log
  4. Push in time: Resonance: push at the natural period
  5. Pushed from rest: Pushed from rest: two swings add