Force on plane inclined immersed surface

AI Thread Summary
The discussion revolves around a homework problem involving an inclined immersed surface with a gate weighing 800 lbf. The primary concern is understanding how the weight of the gate affects the problem, particularly when the hinge is positioned at the midpoint. Participants clarify that the weight contributes to the overall force acting on the gate and influences the equilibrium analysis. It's emphasized that the weight must be considered in calculations to determine the resultant forces and moments. Properly incorporating the weight is essential for solving the problem accurately.
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I have a HW problem dealing with an inclined immersed surface. I can work the problem just fine except this problem says that the gate weighs 800lbf, and and don't know what to do with this number. how does it come into play?
 
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this number is useless when hing is in the middle
 

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