20.2.3. The body rotates around the axis Oz by the force F = 30τ + 25n + 40b, which is attached at point A. The distance OA = 0.2 m. The moment of resistance forces is bearing Mtr = 0.8 N · m. Determine the generalized force corresponding to the angle of rotation φ of the body.

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(DYNAMICS, Chapter 20 - Lagrange equation of the second kind, paragraph - 20.2: Generalized power 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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