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Q9) A bend of constant cross – sectional area which turns through 75 degrees is fitted in a horizontal section of 600mm diameter fresh water – cooling system.

The cooling system pressure is 3 bar and the flowrate is 0.85 m³/s. The pressure loss due to each bend is negligible.

Calculate EACH of the following:

(a) the net force acting on the axis ox; (6)

(b) the net force acting on the axis oy; (6)

(c) the magnitude of the resultant force acting on the bend; (2)

(d) the direction of the resultant force. (2)