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7.8 The height h to which a column of liquid will rise in a small-bore tube due to surface tension is a function of the density of the liquid p, the radius of the tube r, the acceleration due to gravity g, and the surface tension of the liquid σ (see Section 1.9.3). a) Express this dependence in nondimensional terms. (b) If the capillary rise for liquid A is 25 mm in a tube of radius 0.5mm, what will be the rise for a liquid B having the same surface tension but four times the density of liquid A in a tube of radius 0.25 mm a dynamically similar system? Also find rB

Ans:7.8 12.5 mm

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