Mathematics (AS & A Level) · May / June 2026 · Paper 42 · Question 4

4 m s-1 P θ B A A particle P is projected from a point A with speed 4 m s 1 - up a line of greatest slope of a rough plane inclined at an angle i to the horizontal, where tan 3 4 i = . P comes to instantaneous rest at a point B on the plane (see diagram). The coefficient of friction between P and the plane is 3 1.

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