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Homework Help: Springs, please help asap

  1. Jun 16, 2010 #1
    1. The problem statement, all variables and given/known data

    If a mass of 0.3 kg is attached to a horizontal spring system with a spring constant of 32 N/m^2 is stretched 0.2 m from its relaxed length, what is the maximum speed the mass will attain when released from this position?



    3. The attempt at a solution
    i thought all you end up with is Vf=squareroot of k/m(xi^2-xf^2) but it is wrong.
     
  2. jcsd
  3. Jun 16, 2010 #2

    Doc Al

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    Staff: Mentor

    When the mass is at its maximum speed, what will be the stretch of the spring?
     
  4. Jun 16, 2010 #3
    [tex]x_i=?\mbox{ and }x_f=?{ },{ }\mbox{how do you think?}[/tex]
    [tex]\mbox{does the statement is complete? frictional force?}[/tex]
     
    Last edited: Jun 16, 2010
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