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Homework Help: Velocity of an oscillator

  1. Oct 25, 2011 #1
    1. The problem statement, all variables and given/known data

    A simple harmonic oscillator has spring constant k = 7.8 N/m, amplitude A = 12 cm, and maximum speed 4.3 m/s.
    What's the oscillator's speed when it's at x = 5.4 cm?


    2. Relevant equations

    KE_max=1/2*k*A^2
    KE=1/2mv^2
    ma=-kx
    v=k/ma

    3. The attempt at a solution

    I used each equation in order to find the K_max, the mass of the oscilator, the acceleration, and then the velocity in that order, but the answer I got was wrong.
     
  2. jcsd
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