Question: Problem # 4 ( 3 0 pt ) . The rectangular gate AB has a width of 1 meter and a height of 2 meter

Problem #4(30 pt). The rectangular gate AB has a width of 1 meter
and a height of 2 meter and hinged at B. The liquid has a specific weight
of 10,000Nm3. Neglecting atmospheric pressure. Find the force P just
sufficient to keep the gate from opening when h=10 meter.
Problem #4(30 pt). The rectangular gate AB has a width of

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