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Example 3
The valve with a radius of R=1 m and a length of L=10 m closes the corner of a rectangular tank as shown in the figure. Determine the moment that should be applied to keep the valve in the closed position if the tank is filled with water with a density of ρw=1 g/cm^3, while the density of the material from which the valve is made is ρz=5 g/cm^3.