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Pressure at the bottom of a glass pipe?

  1. Apr 12, 2017 #1
    1. The problem statement, all variables and given/known data
    Given a cross sectional area of A=10cm^2
    1kg each of water ( ρ = 1000 kg/m^3 ), olive oil (
    ρ = 800 kg/m^3 ), and mercury ( ρ = 13600 kg/m^3 ) are poured, and allowed to settle. What is the
    pressure at the bottom of the pipe?

    2. Relevant equations

    3. The attempt at a solution
    I have set up a free body diagram of the system with ∑Fy= PA-mg-PoA= o, but I'm not sure what to do at this point.
  2. jcsd
  3. Apr 12, 2017 #2


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    Solve for the pressure at the bottom?
  4. Apr 13, 2017 #3


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    You know how much total mass is supported by the bottom surface. You know the acceleration of gravity. You know the area of the bottom surface. Calculating the heights or incremental pressures from the individual sections is not necessary.
  5. Apr 13, 2017 #4
    What is the total weight of liquid?
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