A uniform disk of mass 300kg is rotating...

A uniform disk of mass `300kg` is rotating freely about a vertical axis through its centre with constant angular velocity `omega .` A boy of mass `30kg` starts from the centre and moves along a radius to the edge of the disk. The angular velocity of the disk now is

`(omega_(0))/(6)`

`(omega_(0))/(5)`

`(4omega_(0))/(5)`

`(5omega_(0))/(6)`

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