The hydraulic lift at a car repair shop is filled with oil. The car rests on a 25-cm-diameter piston. To lift the car, compressed air is used to push down on a 6.0-cm-diameter piston. What does the pressure gauge read when a 1300 kg car is 2.0 m above the compressed- air piston? m = 1300kg = 2m h=

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Variation of pressure

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