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7 Car braking systems multiply forces. In the diagram below, there are three
pistons: one effort piston and two load pistons.
effort piston
brake fluid
to other brakes
axle
brake disc-
load pistons
- tyre
-wheel
a The effort piston has an area of 2.0 cm². The driver exerts a force of
50 N on the effort piston. What is the pressure of the brake fluid?
b This pressure is the same everywhere in the brake fluid, including at the
load pistons. The load pistons have a total area of 40 cm².
Calculate the force at the brake disc.
[2]
[2]
[Total: 4]
a) the effort piston has an area of 2.0cm square. the driver exerts a force of 50N on the effort piston. what is the pressure of the break fluid?
b) this pressure is the same everywhere in the brake fluid, including at the load paitons. the load pistons have a total area of 40cm square. calculate the force at the brake disc.