State Pascal’s law for transmission of fluid pressure and explain the principles of working of a hydraulic lift.
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Pascal's law for transmission of fluid pressure states that "pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere."
Hydraulic lifts work on a basic principle: to go up, a pump pushes oil into the cylinder, pushing the piston (which pushes the lift car) up. To go down, the valve opens and oil is allowed to flow back into the reservoir, and is pushed back using the gravitational force of the lift car.
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