Mathematics (AS & A Level) · May / June 2019 · Paper 42 · Question 3
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A particle of mass 13 kg is on a rough plane inclined at an angle of 1 to the horizontal, where tan 1 = 5 12. The coefficient of friction between the particle and the plane is 0.3. A force of magnitude T N, acting parallel to a line of greatest slope, moves the particle a distance of 2.5 m up the plane at a constant speed. Find the work done by this force. [5]
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