20.5.1. The kinetic energy of the mechanical system T = 8φ2, generalized force Qφ = 16 - φ, where φ - the generalized coordinate, rad. Determine the angular acceleration at the instant when φ = 8 rad.

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(DYNAMICS, Chapter 20 - Lagrange equation of the second kind, paragraph - 20.5: Lagrange equation of the second kind for 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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