Answer :
Final answer:
The brake pedal in an air brake system controls air pressure in hydraulic systems to operate brakes effectively.
Explanation:
The brake pedal in an air brake system controls the air pressure applied to operate the brakes. When the brake pedal is pressed, it increases the pressure in the hydraulic line, which activates pistons attached to the brake pads, causing friction with the brake disc and slowing down or stopping the vehicle.
By following Pascal's principle, the force exerted on the brake pedal is amplified by the hydraulic system, ensuring that each wheel cylinder receives the same pressure and generates the necessary force to apply the brakes effectively. The brake pedal is a crucial component in converting the driver's input force into the mechanical action of stopping the vehicle.
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