21.1.23 The decision of the collection (Reshebnik) Kepe

21.1.23 The decision of the collection (Reshebnik) Kepe

21.1.23. Fluctuations in nonlinear mechanical system described by the differential equation q + 3sinq + 4q = 0, where q - the generalized coordinate. Determine the logarithmic decrement of small oscillations of the system.

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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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