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Pascal's law states that static pressure in a confined incompressible fluid without gravity is the same everywhere. Is this law derivable from more fundamental laws? Some thoughts:

- Is Pascal's law part of the
*definition*of the liquid state?

- If the liquid operates between two hydraulic cylinders of different diameters ##A_1,A_2##, Pascal's law says ##\frac{F_1}{A_1}=\frac{F_2}{A_2}##. Incompressibility means ##V_1=A_1x_1=A_2x_2=V_2##, combining those equations leads to ##W_1=F_1x_1=F_2x_2=W_2##, which is conservation of (mechanical) energy. Is Pascal's law equivalent to conservation of energy?