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A flat horizontal disc of moment of inertia 2.2 kg m2 is rotating at 4.5 rad...

A flat horizontal disc of moment of inertia 2.2 kg m2 is rotating at 4.5 rad s-1 about a vertical axis through its centre. A 0.13 kg mass is dropped onto the disc, landing without slipping 1.4 m from the centre.

Calculate the new angular velocity of the disc, in rad s-1 , to 2d.p.

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