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Combination W-K problem with spring

  1. Apr 22, 2010 #1
    1. The problem statement, all variables and given/known data

    The 2 Kg slider A is held at rest against the spring k=900 compressing the spring by 0.4m. It is released and slides down the 5 m long ramp. Friction is negligible along the track. Slider A then makes an elsastic collision with the 3Kg slider B that is initially at rest. Find the velocity of slider B right after the collision.

    2. Relevant equations

    I used w-k equation then elastic collision to find V'B

    3. The attempt at a solution

    The answer suppose to be 8.8
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 23, 2010 #2
    Start by using the formulas for energy stored in a spring and kinetic energy. Use these to calculate initial velocity. Then find out how much it accelerates down the ramp.
     
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