18.3.18. With the help of the hydraulic cylinder 1 is held in equilibrium Arrow 2, which is attached to the end of the vertical force F = 400 N. Determine the force in kN oil pressure to the hydraulic cylinder piston, if the length of AB = BC.

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(DYNAMICS, Chapter 18 - The principle of possible displacements, paragraph - 18.3: The principle of possible displacements) of Reshebnik to the collection of short tasks on the theoretical mechanics Kep OE, JA Viba, OP Grapis, JA Svetinysh et al. Publishing Moscow / Graduate School / 1989, 2009, 2012.
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