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Homework Help: Damped oscilator

  1. Jan 25, 2010 #1
    i am supposed to solve this excerise and i don't even know where to start.

    A mass M is suspended from a spring and oscillates with a period of 0.880 s. Each complete oscillation results in an amplitude reduction of a factor of 0.96 due to a small velocity dependent frictional effect. Calculate the time it takes for the total energy of the oscillator to decrease to 0.50 of its initial value.

    even the relevant formulas...
  2. jcsd
  3. Jan 25, 2010 #2
    the same of this one

    A 1.05 kg mass is suspended from a spring, with a spring constant of 161.0 N/m. Find the driving frequency which would cause resonance.

    all i need is to know where to start from
  4. Feb 7, 2010 #3
    could some one give me an outline for the first question?
    i am have no idea what to do.
    and i have a test
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