Class 11PhysicsSystem of Particles and Rotational MotionMoment of Inertia of Compound Bodies and Theorem of Moment of Inertia
EasyThe $X$ and $Z$ axes are mutually perpendicular in the plane of a disc,and the $Y$ axis is perpendicular to the plane of the disc. If the moments of inertia of the object about the $X$ and $Y$ axes are $30 \ kg \ m^2$ and $40 \ kg \ m^2$ respectively,then the moment of inertia about the $Z$ axis will be ....... $kg \ m^2$.
- A$70$
- B$50$
- C$10$
- D$0$
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