The relation between overturning couple and height of centre of gravity is given by_______

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The turbine rotor of a ship has a mass of 3500 kg. It has a radius of gyration of 0.45 m and a speed of 3000 r.p.m. clockwise when looking from stern. Determine the gyroscopic couple upon the ship when the ship is pitching in a simple harmonic motion, the bow falling with its maximum velocity. The period of pitching is 40 seconds and the total angular displacement between the two extreme positions of pitching is 12 degrees.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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An Internal combustion engine has a connecting rod of mass 2 kg and the distance between the centre of crank and centre of gudgeon pin is 25 cm. The Center of Gravity lies at a point 10 cm from the gudgeon pin along the line of centres. The radius of gyration of this system about an axis through the Center of Gravity perpendicular to the plane of rotation is 11 cm. If two masses are used instead of the connecting rod, one at the gudgeon pin and other at the crank pin, if the angular acceleration of the rod is 23 000 rad/s^2, then find the correction couple in N-m.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 21, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The mass of the turbine rotor of a ship is 20 tonnes and has a radius of gyration of 0.60 m. Its speed is 2000 r.p.m. The ship pitches 6° above and 6° below the horizontal position. A complete oscillation takes 30 seconds and the motion is simple harmonic. Determine Maximum gyroscopic couple.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

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The turbine rotor of a ship has a mass of 8 tonnes and a radius of gyration 0.6 m. It rotates at 1800 r.p.m. clockwise, when looking from the stern. Determine the gyroscopic couple, if the ship travels at 100 km/hr and steer to the left in a curve of 75 m radius.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from the stern and the ship takes a left turn. The effect of the gyroscopic couple acting on it will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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An aeroplane makes a complete half circle of 50 metres radius, towards left, when flying at 200 km per hr. The rotary engine and the propeller of the plane has a mass of 400 kg and a radius of gyration of 0.3 m. The engine rotates at 2400 r.p.m. clockwise when viewed from the rear. Find the gyroscopic couple on the aircraft.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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