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Homework Help: Elasticity and simple harmonic motion

  1. Mar 25, 2008 #1
    A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3 J of work is required to compress the spring by 0.12 m. If the mass is released from rest with the spring compressed 0.12 m, it experiences a maximum acceleration of 19 m/s2. Find the value of the mass.

    I'm not sure if this is right, I just wanted to check my work.

    step1: find k
    step 2: find m

    3= 1/2 K (.12)^2
    k= 417 N/m

    then i simply used kx= ma
    417(.12)= m (19)
    solved for m and I got 2.63... Is that right even though they say amax is 19?
    Last edited: Mar 25, 2008
  2. jcsd
  3. Mar 25, 2008 #2


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    Homework Helper
    Gold Member

    Your work looks correct to me.
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