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A bucket tied at the end of a 1.6m long ...

A bucket tied at the end of a `1.6m` long string is whirled in a verticle circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position `(Takeg=10m//s^(2))`

A

`4 m/sec`

B

`6.25 m/sec`

C

`16 m/sec`

D

`8.9 m/sec`

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The correct Answer is:
`(4)`
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