Physics (AS & A Level) · Oct / Nov 2018 · Paper 12 · Question 12
A uniform rectangular board is supported by a frictionless pivot at its centre point P. 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
As printed in the paper
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Correct answer: C. 640 cm²
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