Question: A rectangular gate, measuring 3 m in height and 6 m in width, is hinged at the top edge at point A and is held

A rectangular gate, measuring 3 m in height and 6 m in width, is hinged at the top edge at point A and is held closed by a spring mounted at the hinge. A pressure of 2450 Pa (gage) is applied to the water free surface of the left side of the gate. How many N.m of torque must the spring exert to keep the gate closed?
A rectangular gate, measuring 3 m in height and 6

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