A stone of mass 1 kg tied to a string 4 ...

A stone of mass 1 kg tied to a string 4 m long and is rotated at constant speed of 40 m/s a vertical circle. The ratio of the tension at the top and the bottom, is `(g=10" m"//"s"^(2))`

A

`11 : 12`

B

`39 : 41`

C

`41: 39`

D

`12 : 11`

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The correct Answer is:

B

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