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A weightless rod of length l carries two...

A weightless rod of length l carries two equal masses m one fixed at the end and other in the middle ofhte rod. The rod can revolve in a vertical plane about A. Then, horizontal velocity which must be imparted to end C of rod to deflect it to horizontal position is

A

`sqrt((12)/(5)gl)`

B

`sqrt(3gl)`

C

`sqrt((16)/(5)gl)`

D

`sqrt(2gl)`

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The correct Answer is:
A
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