Decision 21.2.15 of the collection (Reshebnik) Kepe
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21.2.15. Differential equations of small oscillations have the form handler 0,114q1 + 0,135q2 + 3000q1 - 3000q2 = 0; 0,237q2 + 0,135q1 + 8000q2 - 3000q1 = 0, where q1, q2 - generalized coordinates. Determine the lower the natural frequency of oscillation of the manipulator.
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(DYNAMICS, Chapter 21 - Small oscillations of mechanical systems, par - 21.2: The vibrations of systems with two degrees of freedom) from 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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