18.1.2. Material points 1 and 2 move in space. In a material point 1 superimposed relationship, the equation has the form x2 + y2 + z2 - 25 = 0. The constraints imposed on the point 2 has the form x2 + y2 + z2 - t2 ≤ 0. 25 Specify the number of points, which is imposed not holonomic retention bond.

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(DYNAMICS, Chapter 18 - The principle of D'Alembert, paragraph - 18.1: Communications and equations) 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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