Physics (AS & A Level) · Oct / Nov 2016 · Paper 12 · Question 16

The diagram shows the brake system of a car. The pipes are filled with incompressible liquid. When a force is applied to the brake pedal, the pressure in the liquid increases and applies a force to each of the four wheels. The area of the piston connected to the brake pedal is 8 cm2. The area of each piston connected to the brakes is 12 cm2. A force of 800 N is applied by the foot to the brake pedal. What is the force applied to each brake?

1. A300 N
2. B530 N
3. C1200 N
4. D4800 N

As printed in the paper