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Spring problem

  1. Jul 24, 2007 #1
    1. The problem statement, all variables and given/known data
    You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. When you release the block, the spring forces it to slide across a tabletop. It stops 75 cm from where you released it. The spring constant is 200 N/m. What is the coefficient of kinetic friction between the block and the table?

    2. Relevant equations
    Ki + Uspi = Kf + Uspf

    3. The attempt at a solution
    i've already set Ki=0 and Uspf=0, but i'm having trouble finding the Vf
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jul 24, 2007 #2
    So you store energy in the spring, which is then transferred to the block. It then loses this energy and stops. Where did it go?
  4. Jul 25, 2007 #3
    what do you mean where did it go?

    the block stopped 75 cm from where it was released
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