20.4.4. At some point in time the generalized coordinate φ = 3 rad, and generalized velocity φ = 2 rad / s. To determine if this module is the kinetic potential of the mechanical system, if it is known that the kinetic energy of the system T = 10φ2, and the potential energy U = 2φ2.

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(DYNAMICS, Chapter 20 - Lagrange equation of the second kind, paragraph - 20.4: The kinetic potential) 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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