We all know that pushing down on the brake pedal slows a car to a
stop. 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
The brakes transmit the force to the tires using friction,
and the tires transmit that force to the road using friction also.
Before we begin our discussion on the components of the brake system,
we'll cover these three :
