Task id10665

Task id10665

Determine the force of water pressure P on the lid covering a rectangular hole in the flat wall of the tank (Fig.), the vertical coordinate hd of the point of its application and the force N that must be applied to the lid at point K, if the dimensions of the hole are B = 30 cm, H = 20 cm, distance from the upper edge of the hole to the free surface of the water a = 120 mm, distance between point K and the hinge axis O - O I = 250 mm, reading of the pressure gauge installed on the top cover of the tank, рм = 0.2•105 Pa.

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