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How does Pascal's principle relate to hydraulic lifts? Hydraulic lifts use Pascal's principle to amplify force. Pascal's principle tells us that pressure is transmitted equally throughout a static fluid. A small force exerted on a small area over a large distance is translated into a large force exerted on a large area over a small distance in a device like a car lift.
Illustration of Pascal's principle at work in a hydraulic press. According to Pascal's principle, the original pressure (P 1) exerted on the small piston (A 1) will produce an equal pressure (P 2) on the large piston (A 2).