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Homework Help: Energy conservation

  1. Sep 23, 2016 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations
    U_initial = U_final

    3. The attempt at a solution
    K_0 = 10 m/s
    K_1 = 0 m/s (at peak)

    V_0 = mgh_0
    V_1 = mgh_1

    1/2 mv02 + mgh0 = 1/2 mv12 + mgh1
  2. jcsd
  3. Sep 23, 2016 #2


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    I'm not sure what you mean here, velocity does not equal energy so those equations are dimensionally inconsistent.
    Your final equation is correct and can be used to solve all three questions. Just plug in the appropriate values for each question.
  4. Sep 23, 2016 #3


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    I believe he is using V to denote potential energy, not velocity.
  5. Sep 23, 2016 #4
    Yes, potential energy, sorry for the misleading. I used the notation in my book.
  6. Sep 23, 2016 #5


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    So what is stopping you from applying the equation? What is it that you do not understand?
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