Water at 20◦C flows through a 300-mm-diameter pipe that discharges into the atmosphere as shown in Figure 4.61. When a partially open valve extends 200 mm from the top of the pipe, the flow rate in...

Water at 20◦C flows through a 300-mm-diameter pipe that discharges into the atmosphere as shown in Figure 4.61. When a partially open valve extends 200 mm from the top of the pipe, the flow rate in the pipe is 0.2 m3 /s and the (gauge) pressure just upstream of the valve is 600 kPa. Estimate the force exerted by the water on the partially open valve.