A disc of mass 2 kg and radius 0.2 m is ...

A disc of mass 2 kg and radius 0.2 m is rotating with angular veocity `"30 rad s"^(-1)`. What is angular velocity, if a mass of 0.25 kg is put on periphery of the disc?

`"24 rad s"^(-1)`

`"36 rad s"^(-1)`

`"15 rad s"^(-1)`

`"26 rad s"^(-1)`

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