Question: the flow of water from a reservoir is controlled by...
The flow of water from a reservoir is controlled by a 5-ft-wide L-shaped gate hinged at point A, as shown in Fig. P3–76E. If it is desired that the gate open when the water height is 12 ft, determine the mass of the required weight W.
Using this amount of mass, what is the force exerted at C if water height is reduced to 6 ft? （Please only help with this and show the steps）