The mayor of the city of Fury, Gustavo Cerati, intends to install a system in the central equestrian park, which periodically expels a jet of water that reaches a height of up to 20 m. You are commissioned as a hydraulic engineer to calculate the gauge pressure (cm of Hg) that must exist inside the lower tube, at a depth of 100 m, so that you can project the water up to that height. Please show the conversion made.

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.