A wheel of a locomotive, travelling on a level track at 120 km / h, falls in a spot hole 10 mm deep and rises again in a total time of 0.8 seconds. The displacement of the wheel takes place with simple harmonic motion. The wheel has a diameter of 3 m and the distance between the wheel centres is 1.75 m. The wheel pair with axle has a moment of inertia of 500 kg-m 2 . Determine the magnitude and the effect of gyro-couple produced in this case.
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