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Damped Oscillator and amplitude

  1. Jan 16, 2012 #1
    1. The problem statement, all variables and given/known data[/b]
    Consider the damped oscillator illustrated in the figure below. Assume that the mass is 365g, the spring constant is 112N/m, and b = 0.117kg/s. How long does it take for the amplitude to drop to half its initial value? (A*e-b*t/(2m))


    http://loncapa.physics.mun.ca/res/mun/PHYSICS/serway-calc/Graphics/Graph13/serb1370.gif


    2. Relevant equations
    ω=√ω_o^2-(b/2m)^2
    ω_o=√k/m

    3. The attempt at a solution

    I solved for ω using the two of the above equations and got 17.5 rad/s
    i just don't know where to go from here, any suggestions ?
     
    Last edited: Jan 16, 2012
  2. jcsd
  3. Jan 16, 2012 #2

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