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A cane filled with water is revolved in ...

A cane filled with water is revolved in a vertical circle of radius 4 m and water just does not fall down. The time period of revolution will be –

A

10 s

B

1s

C

4s

D

20s

Text Solution

Verified by Experts

The correct Answer is:
D
At the highest point C.F force `((mv^(2))/(r ))`
` = ` Weight of water ( mg )
` therefore v^(2) =r g But V=(2pi r ) /(T ) `
`therefore T= (2pi r) /(v) = ( 2pi r) /( sqrt(rg)) = 2pi sqrt((r )/(g))`
` therefore T= sqrt((4 pi ^(2) r)/(g))= sqrt((4xx10xx4)/(10))=4s`
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