Particle moving up a rough plane

A particle of mass 5 kg lies on a rough plane inclined at 20° to the horizontal. A force of 36 N is applied to the particle, parallel and up the the line of greatest slope of the plane. If the particle accelerates up the plane at 2ms⁻², find µ, the coefficient of friction between the particle and the plane.

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Newton's Law of Motion : Rough inclined Plane (1) : ExamSolutions Maths Made Easy