1.

A rectangular plan surface 5 m wide and 7 m deep lies in water in such a way that its plane makes an angle 60 with the free surface of water. Determine the total pressure force when the upper edge is 3 m below the free surface.

A. 311.15 N/cm<sup>2</sup>
B. 622.3 N/cm<sup>2</sup>
C. 155.5 N/cm<sup>2</sup>
D. None of the mentioned
Answer» B. 622.3 N/cm<sup>2</sup>


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