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Torque & Angular Acceleration

Physics: AQA A Level, topic 11.1.4

Torque

Torque is a force which makes an object turn.

Torque calculations

Torque calculations

  • It is possible to find torque in two ways.
  • The first equation for torque is:
  • T=FrT=Fr
  • Where T is the torque, F is the force and r is the distance from the centre of rotation.
Torque calculations 2

Torque calculations 2

  • The second equation for the torque is:
  • T=IαT=I\alpha
  • Where T is the torque, I is the moment of inertia and α\alpha is the angular acceleration.

Test yourself on Torque & Angular Acceleration

  • What is the correct equation for torque?

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