A particle A of mass 4 kg lies on a rough horizontal table and is connected by a light inextensible string over a smooth pulley to a hanging particle B of mass 3 kg. The coefficient of friction between A and the table is 0.25. The system is released from rest with B moving downwards. Take g=9.8g=9.8g=9.8 m s−2^{-2}−2.
Find the acceleration of the particles.
Find the tension in the string.
136 exam-style questions on CCEA A Level Maths 2.3 Forces and Newton's laws, covering 2.3.1 Forces and Newton's laws, 2.3.2 Forces and Newton's laws, 2.3.3 Forces and Newton's laws, 2.3.4 Forces and Newton's laws, 2.3.5 Forces and Newton's laws, 2.3.6 Forces and Newton's laws, 2.3.7 Forces and Newton's laws, 2.3.8 Forces and Newton's laws, 2.3.9 Forces and Newton's laws, 2.3.10 Forces and Newton's laws, 2.3.11 Forces and Newton's laws, 2.3.12 Forces and Newton's laws, and 2.3 Forces and Newton's laws. Each one has a worked solution and a mark scheme showing where the marks go.