A-LevelMathematicsMechanicsMay/June 2021Paper 4 Q36 Marks
Four coplanar forces act at a point. The magnitudes of the forces are 20 N, 30 N, 40 N and F N. The directions of the forces are as shown in the diagram, where sin α° = 0.28 and sin β° = 0.6. Given that the forces are in equilibrium, find F and θ. [Figure 3.1]
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