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Conservation Of Energy

  1. Dec 2, 2012 #1
    1. The problem statement, all variables and given/known data

    A 50 kg pole vaulter running at 9.5 m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.3 m/s, and 200 J of energy is lost due to the friction in the pole, how high did the vaulter jump?

    2. Relevant equations
    K1+U1= K2+U2+Wf


    3. The attempt at a solution
    1/2mvi^2= 1/2mvf^2+mgh+Wf
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 3, 2012 #2
    Okay it doesn't look like much of an attempt at a solution, haha...

    List your parameters first, take it small steps at a time...
    Once you've listed what known parameters you have substitute it into your relevant equation as stated at you attempt at a solution. Do that and lets work from there...
     
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