Rotational MotionMedium
Question
A circular disc is to be made by using iron and aluminum so that it acquired maximum moment of inertia about geometrical axis. It is possible with : -
Options
A.aluminum at interior and iron surrounded to it.
B.iron at interior and aluminum surrounded to it.
C.using iron and aluminum layers in alternate order.
D.sheet of iron is used at both external surface and aluminum sheet as internal layer.
Solution
∴ dI = dmr2 = (volume × density) r2
= M. I is greater when denser material has more distance from axis.
= M. I is greater when denser material has more distance from axis.
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