0625 – Topic 1.5.1 · Motion, forces and energy

3.7 Circular motion (extension)

Syllabus section: Effects of forces

Motion in a circle at constant speed: v = 2πr/T, a = v²/r and F = mv²/r, then vertical circles and conical pendulums. Extension material — the Cambridge IGCSE 0625 core (3.3) only asks for the direction of the force; this is standard groundwork for AS/A Level and AP Physics.

Uniform circular motion: v = 2πr/T, centripetal acceleration a = v²/r and centripetal force F = mv²/r, including vertical circles and conical pendulums.