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A smooth semicircular tube AB of radius ...

A smooth semicircular tube AB of radius r is fixed in a vertical plane and contains a heavy flexible chain of length `pir` and weight `Wpir` as shown. Assuming a slight disturbance to start the chain in motion, the velocity v with it will emerge from the open end B of the tube is:

A

`(4gr)/(pi)`

B

`(2gr)/(pi)`

C

`sqrt(2gr((2)/(pi)+pi))`

D

`sqrt(2gr((2)/(pi)+pi/(2)))`

Text Solution

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The correct Answer is:
D
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