Задача id9768

The conical capillary tapering upward in the lower part has an internal radius r0 and an apex angle of 2 a. This capillary is placed vertically and lowered to an insignificant depth into the wetting liquid. Determine: a) the height of the liquid rising in the capillary in the presence of stable equilibrium; b) the density of a liquid for which there is one equilibrium position.

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