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028. A student holding two weights close to his chest is sitting on a frictionless chair; the student and chair are rotating with an

028. A student holding two weights close to his chest is sitting on a frictionless chair; the student and chair are rotating with an angular speed of 10 rad/s. The rotational inertia of Student + Weights + Chair system about the axis of rotation is 20 kg.m. Now the student extends his arms horizontally to increase the rotational inertia by 10%. Find the new angular speed of the system? (Ans: 9.1 rad/s)

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