Understand and use Newton's third law; equilibrium of forces on a particle and motion in a straight line (restricted to forces in two perpendicular directions or simple cases of forces given as 2-D vectors); application to problems involving smooth pulleys and connected particles; resolving forces in 2 dimensions; equilibrium of a particle under coplanar forces(Pearson Edexcel A-Level)

Mastery Mind: Mathematics Revision · Oct 20, 2026 · 5m

Mechanics becomes much more reliable when you treat every question as a force-modelling task: select one particle, draw the forces, choose axes and then write the appropriate Newton’s-law equation. This Pearson Edexcel A-Level guide covers the full 8.4 extension, including resolved forces, coplanar equilibrium and smooth-pulley systems, so candidates can turn a difficult diagram into creditable method marks. Listen to this audio revision guide for Understand and use Newton's third law; equilibrium of forces on a particle and motion in a straight line (restricted to forces in two perpendicular…