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Homework Help: Time to stop oscillation in liquid medium

  1. Feb 29, 2012 #1
    1. The problem statement, all variables and given/known data

    Suppose an object of mass .505 kg was oscillating with initial Emec = 1.12 J at the end of a spring, and the system was submersed in a liquid medium that absorbed energy at a steady rate of .250 m2/s * spring constant (29.6 N/m). How long would it take the spring to stop oscillating?

    2. Relevant equations
    ΔEmec/t = power (we use power since units end up being Watts)

    3. The attempt at a solution

    ΔEmec/t = 7.4 W
    t=.15 s

    It just seems too easy. Am I doing this right?
  2. jcsd
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