A long thin walled capillary tube of mass M and radius r is partially immersed in a liquid of surface tension T. The angle of contact for the liquid and the tube wall is `30^(@)`. How much force is needed to hold the tube vertically? Neglect buoyancy force on the tube.

A long thin walled capillary tube of mass M and radius r is partially

1.	A long thin walled capillary tube of mass M and radius r is partially immersed in a liquid of surface tension T. The angle of contact for the liquid and the tube wall is `30^(@)`. How much force is needed to hold the tube vertically? Neglect buoyancy force on the tube.
Answer» Correct Answer - `2sqrt(3)pi rT+Mg`

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A long thin walled capillary tube of mass M and radius r is partially immersed in a liquid of surface tension T. The angle of contact for the liquid and the tube wall is `30^(@)`. How much force is needed to hold the tube vertically? Neglect buoyancy force on the tube.

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