NEET Physics Mathematical Tools Questions Solved

Two discs of radii R and 2R are pressed against each other. Initially disc with radius R is rotating with angular velocity ω and other disc was stationary. Both disc are hinged at their respective centres and free to rotate about them.Moment of inertia of smaller is I and bigger disc is 2I about their respective axis of rotation. Find the angular velocity of the bigger disc after long time. 

   [This question is only for Dropper and XII batch]



1. ω

2. ω/2

3. ω/3

4. 2ω3

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