21.1.8. Determine the period of free oscillations of the system of three identical gears, if the moment of inertia of each of them with respect to its axis of rotation is 0.04 kg · m and angular stiffness coefficient of the coil spring 10 Nm / rad.

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(DYNAMICS, Chapter 21 - Lagrange equation of the second kind, paragraph - 21.1: The vibrations of systems with one degree of freedom) 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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