Decision 18.3.20 of the collection (Reshebnik) Kep OE
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18.3.20. On the piston 1 a force F = 250 N. Determine the force with which the lever presses the ABC component 2 to the base 3 in the equilibrium position, if the angle alpha = 30 ° and the distance AB = 0.8 m, BC = 0.4 m.
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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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