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Math Help - Spring Energy Problem

  1. #1
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    Spring Energy Problem

    A 2.7 kg block hangs at the end of a spring. When the block is at rest, the spring is stretched 0.38 m away from its equilibrium position. The block is set into simple harmonic motion and oscillates with an amplitude of 0.24 m. What is the total energy of the block/spring system?

    Relevant equations
    Total energy=\frac{1}{2}kA^2
    there are also PE and KE energy equations...
    and  W_{freq}= \sqrt {\frac {k}{m}}
    There are also the PE and KE equations...but they are kinda long (since i'm still a newbie at latex)
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  2. #2
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    Quote Originally Posted by Linnus View Post
    A 2.7 kg block hangs at the end of a spring. When the block is at rest, the spring is stretched 0.38 m away from its equilibrium position. The block is set into simple harmonic motion and oscillates with an amplitude of 0.24 m. What is the total energy of the block/spring system?

    Relevant equations
    Total energy=\frac{1}{2}kA^2
    there are also PE and KE energy equations...
    and  W_{freq}= \sqrt {\frac {k}{m}}
    There are also the PE and KE equations...but they are kinda long (since i'm still a newbie at latex)
    \text{Total energy} =\frac{1}{2}kA^2.

    You know A, you need k: (2.7)(g) = (k)(0.38) => k = .....
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