20.1.4. The body 1 can move freely on a horizontal plane. The body 2 is connected with the body 1 by a spring. Assuming that the motion of the system occurs in the picture plane, determine the number of generalized coordinates.

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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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