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A body of mass 2 kg is tied to the end o...

A body of mass 2 kg is tied to the end of a string 2 m long and revolved in horizontal circle. If the breaking tension of the string is 400 N, then the maximum velocity of the body will be

A

10 `m//s`

B

30 `m//s`

C

20 `m//s`

D

40 `m//s`

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