A-LevelPhysicsForces, density and pressureOct/Nov 2016Paper 1 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?
A300 N
B530 N
C1200 N
D4800 N
✓ Correct Answer
The correct answer is C: 1200 N
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep