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Homework Help: Maximum amplitude of second order system

  1. Dec 2, 2013 #1
    See attached for the problem and attemped solution, its is not an applied problem, just a theoretical problem.

    Attached Files:

  2. jcsd
  3. Dec 4, 2013 #2


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    Homework Helper
    Gold Member

    Okay, so far so good. :smile:

    But you just sort of stopped. Is there a particular question that you had?

    You've already found the derivative of the denominator. Set the derivative equal to 0 and solve for r. You'll find that there are two or three values of r that make the derivative go to 0, but not all of them are necessarily local minimums (there could be local maximums).

    Once you find the appropriate expression for r that makes the denominator a minimum, plug that back into |H()| and simplify. :wink:
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