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Homework Help: Find the spring constant and the amplitude of the simple harmonic moti

  1. Nov 21, 2004 #1
    Having a little trouble with this one:

    A 4kg mass is attached to a spring and executes simple harmonic oscillation with a period of 1.50s. The total mechanical engery of the system is 12J. What is the spring constant. Determine the amplite.

    I was able to find the amplitude which is 0.585m but am not able to find the spring constant. The formula that I have for spring constant you have to know the angular frequency so I do not think that is right. Can anyone help?
  2. jcsd
  3. Nov 21, 2004 #2

    Andrew Mason

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    Use the equation of shm: [itex]x = A sin \omega t [/itex] where [itex]\omega = \sqrt{k/m}[/itex]
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