9709 Mechanics
Mechanics (9709 Paper 4)
1.1 Forces, modelling assumptions + free-body diagrams
1.2 Resolving forces: components, resultants, and weight on an incline
1.3 Equilibrium of a particle: ΣF = 0 (including 2D resolving)
1.4 Contact forces: normal reaction, smooth/rough surfaces, friction and limiting equilibrium
1.5 Newton’s third law (action–reaction pairs)