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Homework Help: Empty Conical tank

  1. Apr 20, 2009 #1
    1. The problem statement, all variables and given/known data

    Use Torricelli's principle to find the time it takes to empty a conical tank of circular cross section standing on its apex whose angle is 45° and has an outlet of cross sectional area 1.0cm². The tank is initially full of water and at time t = 0 the outlet is opened and the water flows out. The initial depth of the water in the tank is 2m.

    2. Relevant equations

    Torricelli's principle: √2gh
    Volume of a Cone: V= (1/3) π r² h

    3. The attempt at a solution


    where A_b is the area of the tank and A_o is the area of the hole
    Is this the right conclusion and then substitute my given values into that equation to find the time when?
  2. jcsd
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