Rotational MotionEasy
Question
Mark the wrong statement :-
Options
A.If a freely rotating body expands then its angular momentum does not change
B.If a solid cube is melted and cast into the shape of a sphere both of its inertia and moment of inertia changes
C.Two rotating discs having same radius and same thickness but different densities have different inertia and different moment of inertia
D.Moment of inertia of body is not a fixed number
Solution
Inertia ∝ mass
and moment of inertia ∝ (mass) (distance)2
and moment of inertia ∝ (mass) (distance)2
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