Mathematics (AS & A Level) · May / June 2021 · Paper 43 · Question 7

1 P 4 N 0.3 kg A particle P of mass 0.3 kg rests on a rough plane inclined at an angle 1 to the horizontal, where sin 1 = 7 25. A horizontal force of magnitude 4 N, acting in the vertical plane containing a line of greatest slope of the plane, is applied to P (see diagram). The particle is on the point of sliding up the plane.

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