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Homework Help: Torricellis Law

  1. Dec 17, 2009 #1
    1. The problem statement, all variables and given/known data

    ok, im doing an assignment on torricellis law but I have run into a big problem. I have a bowl which can be described by the function:

    squareroot(1/0.11*h). This bowl has a hole in the bottom of a radius of 0.004m. But when I use the relavant formula and integrate it, it says it takes 1200s to drain it. The bowl has a depth of 0.11m. have done experiments and this is far from correct.

    2. Relevant equations

    I use the following formula:


    where B is the crosssectional area.

    I use maple 13 to try to solve it, but it wont give anything reasonable.
  2. jcsd
  3. Dec 17, 2009 #2


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    Homework Helper

    What does squareroot(1/0.11*h) represent? Cross-sectional area?

    Also, in dh/dt*A(h)=-0.6*B*squareroot(2*g*h), what's the -0.6 for? Show us in detail how you got 1200 s.
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