A solid sphere is rotating freely about an axis as shown. An insect moves and follows the dotted path on the circumfercenec of sphere. Match the following ignoring gravity –
Column I | Column II |
(i) Moment of inertia of system | [A] Will remain constant |
(ii) Angular Velocity | [B] Will first increase then decrease |
(iii) Angular momentum | [C] Will first decrease then increase |
(iv) Rotational kinetic energy | [D] Will continuously decrease |
Text Solution
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Ans.
(i) [B]
(ii) [C]
(iii) [A]
(iv) [C]
Sol. Angular momentum is conserved and moment of inertia first increases and then decreases K R = 
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