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A stone hanging from a massless string ...

A stone hanging from a massless string of length 15m is projected horizontally with speed `sqrt(147) ms^(-1)` Then the Speed of the particle, at the point where tension in string equals the weight of particle, is

A

`10 ms ^(-1)`

B

`7 ms ^(-1)`

C

`12 ms ^(-1)`

D

none of these

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The correct Answer is:
B
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