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Rigidity in space is the property by which a spinning gyroscope

  • A.Maintains its axis fixed relative to inertial space
  • B.Turns at right angles to an applied force
  • C.Aligns itself with the earth's magnetic field
  • D.Resists any change in its rate of spin

Answer: A

The angular momentum vector stays fixed unless a torque acts, which is what lets a gyro provide an attitude or heading reference. Precession is the separate property describing what happens when a torque is in fact applied.

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