Pressure at the bottom of a glass pipe?

[KoontzyN]

Homework Statement

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?

Homework Equations

F=PA
P=Po+ρgd

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.

 

[Orodruin]

Solve for the pressure at the bottom?

 

[jbriggs444]

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.

 

[Chestermiller]

What is the total weight of liquid?