Mathematics (AS & A Level) · May / June 2026 · Paper 41 · Question 4

3 kg 1.5 kg m kg A B C Three particles A, B and C have masses 3 kg, 1.5 kg and m kg respectively, where . m 1 5 2 . Particles A and B are attached to the ends of a light inextensible string that passes over a smooth fixed pulley. Particle C is attached to particle B. The system is held at rest with the string taut and the hanging parts of the string vertical (see diagram). The system is released from rest and while the three particles are all attached as described, the tension in the string is 37.5 N.

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