Class 11 NEET Physics System of Particles and Rotational Motion

Question : 48 of 113

Marks: +1, -0

Two discs are rotating about their axes, normal to the discs and passing through the centres of the discs. Disc D1 has 2kg mass and 0.2m radius and initial angular velocity of 50 rad s−1. Disc D2 has 4kg mass, 0.1m radius and initial angular velocity of 200 rad s−1. The two discs are brought in contact face to face, with their axes of rotation coincident. The final angular velocity (in rads−1 ) of the system is

(KN NEET 2013)

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