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Angular displacement and angular velocityEdexcel International A Level Physics: Mind map

What this mind map covers

  • Radians
  • Converting
  • Angular velocity
  • Period and frequency
  • Linear speed

Exam questions on Angular displacement and angular velocity

  1. A fairground carousel rotates at a constant rate, making one complete revolution every 8.0 s. A child sits on a horse 4.0 m from the axis of rotation.
    Calculate the angle through which the child turns in 3.0 s, giving your answer in radians and in degrees.2 marks
  2. A radar dish rotates at a constant rate, making 15 complete revolutions per minute. The controller divides each revolution into equal sectors, each covering 72°.
    Calculate the period of rotation of the dish and the time taken for it to turn through one sector.2 marks
  3. A hard disk drive platter of radius 4.7 cm spins at a constant 7200 revolutions per minute.
    Calculate the angular velocity of the platter, the period of its rotation, and the speed of a point on its rim.3 marks
See the full worksheet

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).