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Homework Help: Bernoulli and waterflow

  1. Mar 30, 2016 #1
    1. The problem statement, all variables and given/known data
    radius of watertank = 5.5cm

    2. Relevant equations

    3. The attempt at a solution
    I've tried to put up to equations on the form:
    134=k*sqrt(x+0.6), 75=k*sqrt(x+0.3).

    Where k is the constant and x is the height from the bottom of the tank to the exit of the pipe.
    I think something must be wrong in my assumptions since I get different k values for the two situations
  2. jcsd
  3. Mar 30, 2016 #2


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    Staff Emeritus
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    Is there a question here?

    Simply posting a diagram is insufficient. This is Physics Forums, not Psychics Forums.
  4. Mar 30, 2016 #3
    I'm sorry for not being clear. I want to find a function for the waterflow out from the tank depending on the height of the tank. I've already measured the flow out from two different heights. I was wondering if I should try to find a mathematical expression for it based on these two values, or simply find more measurements and linearize it.
  5. Mar 30, 2016 #4


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    Please post your working. You have two independent linear equations with two unknowns (x, k2), so it would be very strange if there is no consistent solution.
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