Mathematics (AS & A Level) · Oct / Nov 2020 · Paper 41 · Question 7

C 30Å 0.2 kg A B 1 m 1 m Three points A, B and C lie on a line of greatest slope of a plane inclined at an angle of 30Å to the horizontal, with AB = 1 m and BC = 1 m, as shown in the diagram. A particle of mass 0.2 kg is released from rest at A and slides down the plane. The part of the plane from A to B is smooth. The part of the plane from B to C is rough, with coefficient of friction - between the plane and the particle.

Read automatically from the paper; the printed page above is exact.