A particle of mass m is attached to a thin uniform rod of length a at a distance of a4 from the mid-pointC as shown in the figure. The mass of the rod is 4 m. The moment of inertia of the combined system aboutan axis passing through 0 and perpendicular to the rod is [EAMCET 2013]
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a
9148ma2
b
2748ma2
c
5148ma2
d
6448ma2
answer is A.
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Detailed Solution
In given condition, the moment of inertia of the combine system about an axis passing through O isI=43ma2+m3a42∵ I=9148ma2