Three identical cylinders with a diameter of D = 50 mm

Three identical cylinders with a diameter of D = 50 mm are filled with oil (δ = 0.9; υ = 0.3St) and connected by pipes whose dimensions are l1 = l2 = 22.5 m, l3 = 20 m and d = 25 mm. In the cylinders are pistons loaded with forces R1 = 700N, R2 = 640N and R3 = 500N. Determine the magnitude and direction of the speed of movement of the pistons. Neglect the heights of the pistons relative to the nodal point of the system, friction in the cylinders and local pressure losses in the pipes.
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