Pascal's law-It states that the pressure in a liquid at rest is the same at all points if they are at the same level.
`"Hydraulic lift ":`
Let, a = area of cross-section of piston in cylinder B
A = area of cross section of position in C also a <
Fill the cylinders with an in compressible fluid.
Let r = downward force applied on piston B.
Then pressure exerted on liquid is
`P = fla`
This pressure is equally transmitted to piston in cylinder C (according to Pascal's law) :. upward force acting on the piston of cylinder C is
`F = Pa = f/a A`
as `A>> a, F >> f`
Therefore a small force applied on piston B
appears as a larger force on piston C.