A weightless thread can support tension ...

A weightless thread can support tension up to `30N.A` particle of mass `0.5kg` is tied to it and is revolved in a circle of radius `2m` in a verticle plane. If `g=10m//s^(2)`, then the maximum angular velocity of the stone will be

`5 rad//s`

`sqrt(30) rad//s`

`sqrt(60) rad//s`

`10 rad//s`

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