A vertical trapezoidal gate that is used as an automatic
Chapter 9, Problem 9.61(choose chapter or problem)
A vertical trapezoidal gate that is used as an automatic valve is held shut by two springs attached to hinges located along edge AB. Knowing that each spring exerts a couple of magnitude \(1470\mathrm{\ N}\cdot\mathrm{m}\), determine the depth d of water for which the gate will open.
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