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Homework Help: Velocity of a circular path

  1. Sep 13, 2016 #1
    1. The problem statement, all variables and given/known data
    14.103_01.PNG 14.103_02.PNG

    2. Relevant equations
    s= r* theta
    1/2 mv^2 = mgh energy conservation
    3. The attempt at a solution

    I think I might be having something wrong in the attempt. And how do you do using the polar coordinate approach?

    14.103_03.PNG 14.103_04.PNG
  2. jcsd
  3. Sep 13, 2016 #2

    The question gives r as 6m, not the arch length as 6m?

    Cant help with much else tho! :)
  4. Sep 13, 2016 #3
    OHHHH yes. r = 6m, so I can save time for getting that, good catch :)
    And am I doing well on the energy conservation approach?
  5. Sep 13, 2016 #4


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    I can't see your working very clearly on this tablet I'm using but where does the 1/2 come from in 1/2*m*g*h
  6. Sep 13, 2016 #5
    I wrote it wrong, it shouldn't be 1/2 there
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