A-LevelPhysicsForces, density and pressure9702/12 · Oct/Nov 2016 · Q161 Mark

The diagram shows the brake system of a car. [Figure 16.1] 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?

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A300 N

B530 N

C1200 N

D4800 N

✓ Correct answer

C: 1200 N

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2016 Paper 1 Variant 2, question 16.

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