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Homework Help: Force - Determining F from U

  1. Feb 12, 2009 #1
    1. The problem statement, all variables and given/known data

    If U = 7x^2 + 9xy + 3(y^2)z, what are the components of the force vector F ?


    3. The attempt at a solution
    These are the answers I've come up with. I've gotten Fy and Fz correct, but the Fx is wrong and I'm pretty sure its actually right. However, I would love to be proven wrong lol.
    Fx=-14x-9y
    Fy=-9x-6yz
    Fz=-3y^2
     
  2. jcsd
  3. Feb 12, 2009 #2

    tiny-tim

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    Welcome to PF!

    Hi Stryder_SW! Welcome to PF! :wink:
    Well, your Fx looks right to me. :smile:
     
  4. Feb 12, 2009 #3
    yeah, I'm about to message my professor lol.
     
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