Question

brake pad is at the system of automobile are used to

Answer 1

used to stop the car or any automobile when it is necessary

Answer 2

That's why brakes use hydraulics: a system of fluid-filled pipes that can multiply force and transmit it easily from one place to another. When you press on the brake pedal, your foot moves a lever that forces a piston into a long, narrow cylinder filled with hydraulic fluid.

Brake pads are a component of disc brakesused in automotive and other applications. Brake pads are steel backing plates with friction material bound to the surface that faces the disc brake rotor.