Discussion
In the context of a gyroscope, what does the term 'precession' refer to?
Answer: C
Precession is the slow change in the direction of the axis of rotation of a spinning object. In a gyroscope a torque applied perpendicular to the spin axis makes the axis turn about a third axis, which is the precession. Wobbling about the axis is nutation, the spinning motion is the spin, and the applied force is the torque and not the precession, so the other options describe other things.
The rate of precession equals the applied torque divided by the angular momentum of the spinning rotor, so a faster spin gives a slower precession.
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