The sump pump has a net mass of 310 kg and pumps fresh water against a 6-m head at the rate of 0.125 m³/s. Determine the vertical force R between the supporting base and the pump flange at A during operation. The mass of water in the pump may be taken as the equivalent of a 200-mm-diameter column 6 m in height.

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100 mm 45° A 6 m 200 mm 250 mm