A-LevelMathematicsMechanicsOct/Nov 2025Paper 4 Q77 Marks
A particle P of mass 6 kg lies on a rough plane inclined at an acute angle θ to the horizontal. A horizontal force of magnitude 12N acts on P as shown in the diagram. The line of action of this horizontal force lies in a vertical plane which contains the line of greatest slope of the plane that passes through P. The coefficient of friction between P and the plane is μ. P is in equilibrium and on the point of sliding down the plane. [Figure 7.1]
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