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Soap bubble of radius R is blown at one ...

Soap bubble of radius R is blown at one end of a pipe of circular of circular cross-section of radius R as shown in diagram. On the vertical portion of pipe, there is a piston of mass m. T is surface tension of liquid.

Find the mass of piston for which it remain in equilibrium

A

`(4 pi TR)/(g)`

B

`(2pi TR)/(g)`

C

`(4TR)/(g)`

D

`(4TR^(2))/(g)`

Text Solution

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The correct Answer is:
A
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