rotates freely about a frictionless vertical axle A second disk with moment of inertia 12 initially at rest drops onto the first

Question

rotates freely about a frictionless vertical axle A second disk with moment of inertia 12 initially at rest drops onto the first disk see figure Due to friction between the two disk surfaces they eventually reach a common angular speed The ratio of final angular speed to initial angular speed is 1 12 Gangage Learning Al Rights Reserved a l1 11 12 b 12 11 c 11 2 11 O d 11 12 12 11 12 i Before wf After

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