Resonance & Doppler Effect

  • Due Nov 17, 2016 at 8:59am
  • Points 2
  • Questions 2
  • Available until Nov 17, 2016 at 8:59am
  • Time Limit None
  • Allowed Attempts Unlimited

Instructions

Watch the following video lecture:
http://youtu.be/GFQlcsHlVnA

[PDF of Slides]

Summary:

• Resonance occurs when forced vibrations match an object’s natural frequency.
• Resonant oscillations may grow exponentially due to the steady, synchronized transfer of energy into the vibrating object.
• By the Doppler Effect, waves coming from a moving object have a different wavelength and frequency than if the object were stationary.
• If moving towards you, wavelength is shorter and frequency higher. If moving away, wavelength is longer and frequency lower.
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