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A stone of mass of 16 kg is attached to ...

A stone of mass of 16 kg is attached to a string 144 m long and is whirled in a horizontal circle. The maximum velocity of revolution that can be given to the stone without breaking it, will be (Breaking tension is 16 N)

A

20 `m//s`

B

16 `m//s`

C

14 `m//s`

D

12 `m//s`

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