Frictional torque
What Frictional torque means in Physics A-Level, as defined for AQA.
Definitions of Frictional torque
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Reference: AQA
Opposes motion in rotating machinery, so the net torque is the applied torque minus the frictional torque.
Torque from air resistance or contact surfaces that reduces angular momentum over time.
Topics that use Frictional torque
- Angular momentum (A-level only) (AQA A-Level)
- Work and power (A-level only) (AQA A-Level)
Related terms
- Angular momentum
- Angular velocity
- Efficiency
- Moment of inertia
- Rotational kinetic energy
- Angular impulse
- Change in angular momentum
- Conservation of angular momentum
Using Frictional torque in the exam
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