10. A rough casting for a rotor weighs 450 lb. and is mounted on centres 46 in. apart, ready for machining: it is given static balance by two masses A and B in planes which are situated 20 in. and 16 in. respectively on either side of the plane containing the mass centre. The weights of the masses A and B are 20 lb. and 24 lb. respectively, and their mass centres are at 90° to each other relative to the axis of the casting, and at 15 in. and 18 in. radius respectively. Determine the eccentricity of the mass centre of the casting, its position relative to that of mass A, and the forces on the centres when the rotor with attached masses A and B is run at 50 r.p.m. (U. Lond.)

10. A rough casting for a rotor weighs 450 lb. and is mounted on centres 46 in. apart, ready for machining: it is given static balance by two masses A and B in planes which are situated 20 in. and 16 in. respectively on either side of the plane containing the mass centre. The weights of the masses A and B are 20 lb. and 24 lb. respectively, and their mass centres are at 90° to each other relative to the axis of the casting, and at 15 in. and 18 in. radius respectively. Determine the eccentricity of the mass centre of the casting, its position relative to that of mass A, and the forces on the centres when the rotor with attached masses A and B is run at 50 r.p.m. (U. Lond.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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