InterviewSolution
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InterviewSolution
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Calculate the moment of inertia of a rectangular frame formed by uniform rods having mass `m` each as shown in about an axis passing through its centre and perpendicular to the plane of frame. Also find moment of inertia about an axis passing through `PQ` ? |
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Answer» a. For calculation of the moment of inertia about centre, use parallel axis theorem `I=2[(Ml^(2))/12+m(b/2)^(2)]+2[(mb^(2))/12+m(l/2)^(2)]` b. Hence, we can also use parallel axis theorem `I_(PQ)=2((mb)/3)^(2)+mb^(2)=5/3mb^(2)` |
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