Question: A 8-m-high, 7-m-wide rectangular plate blocks the end of a 7-m-deep freshwater channel, as shown in the figure. The plate is hinged about a

A 8-m-high, 7-m-wide rectangular plate blocks the end of a 7-m-deep freshwater channel, as shown in the figure. The plate is hinged about a horizontal axis along its upper edge through a point A and is restrained from opening by a fixed ridge at point B. Determine the force exerted on the plate by the ridge. In the figure, the total height (s + h) is 8 m where s is 1 m. DI T S h B The force exerted on the plate by the ridge is 4416 KN.

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