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Operation of the brake on these cars is similar to the operation of the brakes on a passenger automobile mainly in that

A. They use hydraulic fluid
B. They rely on air pressure
C. They are controlled by foot pedals
D. They engage gradually

Answer :

Final answer:

The operation of car brakes is similar to that of passenger automobiles primarily because they both utilize a) hydraulic fluid, based on Pascal's principle, to exert forces that engage the braking mechanisms, including car disc brakes and hydraulic brakes.

Explanation:

The operation of the brake on cars is primarily similar to the operation of the brakes on a passenger automobile mainly because they use hydraulic fluid. This system is based on Pascal's principle, which ensures that when the brake pedal is depressed, the pressure increases everywhere in the fluid within the hydraulic line. This increased pressure acts on pistons attached to the brake pads, pushing them against discs or drums connected to the wheels, hence slowing down or stopping the vehicle. This mechanism is intrinsic to most modern braking systems, including car disc brakes, which involve the use of a caliper to exert a squeezing force on a disc behind the car wheel, and hydraulic brakes, where hydraulic oil is pushed from the input piston to the output piston, effectively squeezing the brake pad against the brake disc surface and generating the friction required to decelerate.

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