Задача id10697

A float made of copper serves to indicate the level of separation between water and gasoline. Determine the diameter D of the float if d = 1 mm; d = 3 mm; L = 2 m; Pcopper = 9•103 kg/m3; Pb = 860 kg/m3; Pv = 103 kg/m3; l = 1 m; H = 10 cm (Fig.).

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