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Conceptual Physics Question on a Hanging Spring

  1. Oct 12, 2011 #1
    -The spring is stretched down and released with an initial velocity (v0) in the upward direction. The maximum velocity it reaches is v1.
    -The spring is stretched down and released with an initial velocity (v0) in the downward direction. The maximum velocity it reaches is v2.

    Rank the velocities. I said it was v1>v2>v1. The maximum velocity is reached at the middle of the path, and it is in the upward direction. I know I'm wrong; I just don't know how.
     
  2. jcsd
  3. Oct 12, 2011 #2

    ehild

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    What are the initial KE and PE of the spring? At what height is the KE maximum? Can be the velocity both upward and downward at that point?

    ehild
     
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