(c) A long solid cylinder of radius 0.8 m hinged at point A is used as an automatic gate, as shown below (Figure 2). When the water level reaches 5 m, the gate opens by turning about the hinge at point A. Determine (a) the resultant hydrostatic force acting on the cylinder and its line of action (including angle with the horizontal) when the gate opens and (b) the weight of the cylinder per m length of the cylinder. Density of water is 1000kg/m³. 5 m 4.2 m 0.8 m R = 0.8 m A W Figure 2