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A bucket full of water is rotated in ver...

A bucket full of water is rotated in vertical circle of radius 20 m. The minimum speed that the bucket should have so that water will not fall when it is at the highest point is:

A

`sqrt(98)m/s`

B

`sqrt(9.8)m/s`

C

14 m/s

D

1.4 m/s

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