A particle hangs in equilibrium from one end of a light inextensible string.
The string passes over a smooth pulley.
State one consequence of modelling the string as light.
State one consequence of modelling the pulley as smooth.
8 exam-style questions on WJEC A Level Maths 2.7.3 Kinematics. Each one has a worked solution and a mark scheme showing where the marks go.