a close cylinder of diameter 30 cm and height 20cm is completely filled with water. calculate the total pressure force in n exerted by water on the top of the cylinder

Two capillary tubes with 2.4 mm and 1.5 mm inside diameters were inserted into a liquid of density 0.85 g cm³. Calculate the surface tension of the liquid if the difference between the capillary rises in the tubes is 1.5 cm. Assume contact angle is 0.

1. Hydrostatic Force on Plane Surface. An open rectangular tank is 7 m high and has a square base 5 m on a side. If the tank is half-filled with fresh water (density is 1000 kg/m'), determine (a) the total hydrostatic force on a vertical side, in kN and (b) the location of the center of pressure as measured from the liquid surface, in cm. Draw the side view of tank showing the hydrostatic force F and the distance, yp. Is I + Ad a. Magnitude: F = yh,A b.Direction: Perpendicular to the Area c. Location: y, === S.

Gate ABC in Fig.  is 1 m square and is hinged at B .It will open automatically when the water level h becomeshigh enough. Determine the lowest height for which thegate will open. Neglect atmospheric pressure. Is this resultindependent of the liquid density?