Question

A hydraulic system lift has 2000N applied to an input piston that has an area of 50cm2. The output piston has an area of 200cm2

what is the pressure on the liquid by the input piston?

Answer 1

"Pressure is the force which applied perpendicular to the surface."

P = F / A

Where P is pressure (N m⁻² ), F is force which is perpendicular to the surface (N) and A is area of the surface (m²).

Here,
The applied force into the input piston = 2000 N
The surface area of the input piston    = 200 cm² = 0.02 m²
Hence the pressure applied to input piston = 2000 N / 0.02 m²
                                                                     = 100000 N m⁻²

The force applied to the input piston acts on the liquid hydraulic system.

Hence the pressure on liquid = 100000 N m⁻²