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Homework Help: Block and Spring Problem

  1. Aug 22, 2008 #1
    1. The problem statement, all variables and given/known data
    I. A 2kg block is falling at a speed of 20 m/s and is 18 meters above the spring. The spring constant is 4134 N/m, to the nearest tenth of a cm how far is the spring compressed?

    II. In the previous problem to the nearest hundredth of a meter to what height will the block rise after it hits and leaves the spring?

    Can I get some direction on this problem? It really stumps me. I know the first one will lead to the second answer.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 22, 2008 #2

    Doc Al

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    Staff: Mentor

    What's conserved?
     
  4. Sep 20, 2008 #3
    I have a similar problem that I am working on as well. I have a 2.0kg block dropped 48 cm onto a spring with a k(s) of 1600 J/m^2. I worked the first part of the problem to determine the potential energy(gravity) and kinetic energy before the block hit the spring. Now I am trying to work on the 2nd part to determine compression.

    Does this help?
     
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