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Resonance in a damped system produces

  • A.a response that decays to zero within one cycle
  • B.a large but finite response
  • C.an infinite response, exactly as in the undamped case
  • D.no response whatsoever at that frequency

Answer: B

Damping bounds the amplitude at roughly \( 1/2\xi \) times the static value, whereas an undamped system would grow without limit. Real structures always have some damping, so the response is large rather than infinite.

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