Mathematics (AS & A Level) · May / June 2020 · Paper 43 · Question 7

A B 3m kg 2m kg 1 0.8 m Two particles A and B, of masses 3m kg and 2m kg respectively, are attached to the ends of a light inextensible string. The string passes over a fixed smooth pulley which is attached to the edge of a plane. The plane is inclined at an angle 1 to the horizontal. A lies on the plane and B hangs vertically, 0.8 m above the floor, which is horizontal. The string between A and the pulley is parallel to a line of greatest slope of the plane (see diagram). Initially A and B are at rest.

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