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Forced undamped vibration

  1. Nov 4, 2007 #1
    as we know ,the equation to the undamped forced vibration is
    x=Asin{(w1+w2)/2}sin{(w1-w2)/2},the symbols have their usual meaning..but i can't understand how (w1+w2)/2 comes in picture in the phasor diagram...also its significance
  2. jcsd
  3. Nov 4, 2007 #2
    plz reply
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