A-LevelPhysicsForces, density and pressureOct/Nov 2018Paper 1 Q121 Mark
A uniform rectangular board is supported by a frictionless pivot at its centre point P. [Figure 12.1] Two forces act in the plane of the board. Force F acts at corner Q and force 2.5F acts at corner R. The perpendicular distance between the line of action of force F and point P is 20 cm. The board is in equilibrium. What is the area of the board?
A160 cm²
B320 cm²
C640 cm²
D1600 cm²
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The correct answer is C. This question tests the candidate's understanding of forces, density and pressure within the Physicssyllabus. The examiner's mark scheme requires...
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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...
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