20.1.9. Prism 1 can move in a horizontal plane. The body 2 slides along its upper edge. The bodies of 3 and 4 are connected to each other and the body 2 springs. Determine the number of generalized coordinate system, if all the objects move in the same vertical plane.

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(DYNAMICS, Chapter 20 - The general equation of dynamics, paragraph - 20.1: Generalized coordinates) 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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