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The rate of precession of a gyroscope is

  • A.Independent of the applied torque
  • B.Proportional to the square of the rotor speed
  • C.Torque divided by angular momentum
  • D.Proportional to both torque and angular momentum

Answer: C

The relation \( \Omega = T/(I\omega) \) shows why a fast heavy rotor is a stable reference: the same disturbing torque produces a far smaller drift. It also explains why a gyro running down becomes progressively less trustworthy.

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