A Uniform Metallic Rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperating slightly

A Uniform Metallic Rod rotates about its perpendicular bisector with c

1.	A Uniform Metallic Rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperating slightly
Answer» Its speed of rotation increases Its speed of rotation decreases Its speed of rotation remains same Its speed increases because its moment of Inertia decreases. Solution :(b) When a metallic rod is heated it expands. Its M.I about perpendicular BISECTOR increases. So according to Law of conservation of ANGULAR MOMENTUM, its angular speed (W) decrease. as `I_(1)omega_(1)=I_(2)omega_(2)`.