Engineering Physics - Steady-State Oscillations
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Questions and Answers

In the steady state, what happens to the amplitude of the forced oscillations as the difference between the forcing frequency and the natural frequency increases?

  • Remains constant
  • Increases
  • Becomes unpredictable
  • Decreases (correct)
  • What happens to the oscillations when free oscillations die out and only forced oscillations remain?

  • Oscillations continue with variable amplitude
  • Oscillations become chaotic
  • Oscillations reach a steady state with constant amplitude (correct)
  • Oscillations stop completely
  • What does A represent in equation (1.32) for forced oscillations?

  • Frequency of applied force
  • Amplitude of forced oscillations (correct)
  • Phase angle between displacement and external force
  • Natural frequency
  • In the steady state, what is the relationship between energy input per cycle and energy lost per cycle?

    <p>Energy input per cycle equals energy lost per cycle</p> Signup and view all the answers

    What do both the amplitude A and the initial phase a depend on?

    <p>Applied force's frequency wf</p> Signup and view all the answers

    How is the amplitude of forced oscillations calculated according to equation (1.33)?

    <p>(Fm^2 / f^2) * (f0^2 / (ω - γω))</p> Signup and view all the answers

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