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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 60⁰ 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/cm2 |
B. | 622.3 N/cm2 |
C. | 155.5 N/cm2 |
D. | None of the mentioned |
Answer» B. 622.3 N/cm2 | |