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A hollow sphere has radius 6.4 m. Minimu...

A hollow sphere has radius 6.4 m. Minimum velocity required by a motor cyclist at bottom to complete the circle will be.

A

17.7`m//s`

B

10.2`m//s`

C

12.4`m//s`

D

16.0`m//s`

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The correct Answer is:
A
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