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Homework Help: Leaking water problem

  1. Feb 26, 2009 #1
    img001.jpg
    I'm stuck please help me... thanks
     
  2. jcsd
  3. Feb 26, 2009 #2

    Dick

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    Didn't they also give you the water level in the tank? I think you need that as well.
     
  4. Feb 26, 2009 #3
    no, they didn't :(
     
  5. Feb 26, 2009 #4

    Dick

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    It isn't labelled in a diagram or anything? Their mistake, I think. Then suppose the water level of the tank is L above the vertex (you can plug in the number for L later). Can you express the rate in terms of L?
     
  6. Feb 26, 2009 #5
    v=1/3 pi r^2h

    substitute r= 3h/2

    V= (3pi h^3)/4

    d/dt ( V = (3pi h^3) / 4 )

    R= (27pi/8)h^2 + 0.5

    is this right?
     
  7. Feb 26, 2009 #6

    Dick

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    Looks fine to me.
     
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