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Radians: the natural unit for circular motion

Radians: the natural unit for circular motion

alt="Circle showing a 1 radian angle at the centre, with radius r and arc length s = r labelled" A radian is the angle at the centre of a circle made by an arc whose length equals the radius. Because the whole circumference is 2πr2\pi r2πr, a full turn is 2π2\pi2π radians.

Circular motion (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Circular motion (A-level only)

Step-by-step lessons on AQA A Level Physics Circular motion (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons