A brake is a device for slowing or stopping a moving vehicle, typically by applying pressure to the wheels. It is a system consisting of a combination of interacting parts that work to slow a motor vehicle when pushing down on the brake pedal. But how does this happen? How does your car transmit the force from your leg to its wheels? How does it multiply the force so that it is enough to stop something as big as a car?

When you depress your brake pedal, your car transmits the force from your foot to its brakes through a fluid. Since the actual brakes require a much greater force than you could apply with your leg, your car must also multiply the force of your foot. It does this in two ways:

  • Mechanical advantage (leverage)
  • Hydraulic force multiplication

Braking system - operation principle

Car Braking Systems

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