Tag: pressure in fluids and atmospheric pressure

Hydraulic jack is a device, works on the Pascal's law, used to lift heavy objects. 

Type of braking system referred to as power brakes makes the use of compressed air.

The piston in the master cylinder is connected by mechanical linkage to the Brake pedal in the hydraulic braking system.

Since in integral type of power brake, the diaphgram acts directly on the hydraulic piston in the multiplier unit which leads to the increase in further pressure.

In the power assisted kind of brake the bellows applies force to master cylinder piston through mechanical linkage. A mechanical linkage is an assembly of bodies connected to manage forces and movement.

Most brakes on cars now are what are called "Power" brakes, and driven by a hydraulic braking control system

An air compressor produces air for the brake system. Powered by the vehicle’s engine, the air compressor draws in air at normal pressure and forces it into a much smaller space, causing the pressure of the air to increase. This compressed air is a form of stored energy.

Atmospheric power brakes and vaccum suspended power brake are two classifications of vaccum assisted power brakes.

pressure for same liquid is $\rho gh$

$f=900 N$
$a=\pi \times (\frac {1.8}{2})^2=\pi \times \frac {(1.8)^2}{4}$
$A=\pi \times (\frac {36}{2})^2=\pi \times \frac {(36)^2}{4}$
Now $\frac {f}{a}=\frac {F}{A}$
$\Rightarrow \frac {900\times 4}{\pi (1.8)^2}=\frac {F\times 4}{\pi \times (36)^2}$
$\therefore F=\frac {900\times 4}{\pi \times 1.8\times 1.8}\times \frac {\pi \times 36\times 36}{4}$
$=36\times 10^4N$.