The turbine rotor of a ship has mass of 2000 kg and rotates at 25 r.p.s. clockwise when viewed from the stern. The radius of gyration of rotor is 0.30 meter. Determine gyroscopic couple and its effect when (i) the ship turns right at a radius of 250 m with a speed of 25 kmph. (ii) The ship rolls at an angular velocity of 0.1 rad/sec.

The turbine of rotor of a ship has mass of 3000 kg. & radius of gyration of 0.4m, and clockwise speed of 2500 r.p.m. when looking from stern. Determine gyroscopic couple and its effect when (i) The ship steers to the left on curve of 100 m radius at a speed of 36km/hr. and (ii) When the ship is pitching in S.H.M., the bow falling with its maximum velocity. The period of pitching is 40 Sec.

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