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Multiple Choice

What is Pascal's Law?

Pascal's Law states that when you apply external pressure to a confined fluid, that pressure is transmitted undiminished in all directions throughout the fluid and to the container walls. This uniform pressure is what makes hydraulics possible: the pressure created by a small piston acts everywhere in the liquid, so a larger piston experiences the same pressure and, because force equals pressure times area (F = P × A), a larger piston can exert a much greater force. This is why hydraulic systems can multiply force, as seen in hydraulic presses and brakes. The principle assumes the fluid is enclosed and relatively incompressible for the moment, so the pressure remains consistent throughout.

Pascal's Law states that when you apply external pressure to a confined fluid, that pressure is transmitted undiminished in all directions throughout the fluid and to the container walls. This uniform pressure is what makes hydraulics possible: the pressure created by a small piston acts everywhere in the liquid, so a larger piston experiences the same pressure and, because force equals pressure times area (F = P × A), a larger piston can exert a much greater force. This is why hydraulic systems can multiply force, as seen in hydraulic presses and brakes. The principle assumes the fluid is enclosed and relatively incompressible for the moment, so the pressure remains consistent throughout.