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Homework Help: Damped harmonic oscillator physics

  1. Dec 6, 2005 #1
    Please I don't understand this problem at all:

    Consider a driven damped harmonic oscillator.Calculate the power dissipated by the damping force?
    calculate the average power loss, using the fact that the average of (sin(wt+phi) )^2 over a cycle is one half?

    Please can I have some help for it?

  2. jcsd
  3. Dec 6, 2005 #2
    Well, what's the differential equation which describes a damped harmonic oscillator? How does this differ from the normal harmonic oscillator equation? What, physically, causes this difference?
  4. Dec 6, 2005 #3
    I know that x(t)= A*exp(alpha*t) *sin(wt+phi)
    the diffierence come from the fact that the amplitude diminishes as t changes.
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