Rotational MotionHard
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
Create a free account to view solution
View Solution FreeMore Rotational Motion Questions
If the earth loses its atmosphere sudenly, then the duration of day will :-...A uniform cylinder has a radius R and length L. If the moment of inertia of this cylinder about an axis passing through ...A solid sphere with a velocity (of centre of mass) v and angular velocity ω is gently placed on a rough horizontal ...Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is ...Calculate the torque about point O in given diagram...