JEE Main | 2018Rotational MotionHard
Question
Seven identical circular planar disks, each of mass M and radius R are welded symmetrically as shown. The moment of inertia of the arrangement about the axis normal to the plane and passing
through the point P is :
Options
A.
B.
C.
D.
Solution
I0 = Icm + md2
+ 6(M(2R)2) =
Ip = I0 + md2
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