Three rings each of mass m and radius R are so placed that they touch each other. The radius of gyrations of the system about the axis as shown in fig.
Asked by m.nilu
19th October 2018,
12:55 AM
Answered by Expert
Answer:
Moment of inertia of ring-1 with respect to the given axis = 
.............(1)
.............(1)where m is mass of ring and r is its radius.
Moment of inertia of ring-2 with respect to the given axis, by parallel axis theorem = 
.....................(2)
.....................(2) similarly Moment of inertia of ring-3 with respect to the given axis, by parallel axis theorem = 
.....................(3)
.....................(3)Moment of inertia I of the system of combined rings is given by, I = 
Since combined mass of the system is 3m, radius of gyration =[ I/(3m) ]1/2 = 
Answered by Expert
19th October 2018,
4:43 AM
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