A-LevelPhysicsForces, density and pressure9702/12 · Oct/Nov 2018 · 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?

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A160 cm²

B320 cm²

C640 cm²

D1600 cm²

✓ Correct answer

C: 640 cm²

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2018 Paper 1 Variant 2, question 12.

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