17.3.44. The disc starts to rotate in a horizontal plane from the state of rest with ε = angular acceleration of 400 rad / s2. One end of the rod of a homogeneous mass of 0.3 kg is fixed to the hinge A, and the second is supported on the rim. To determine the initial time of motion of the reaction unit at point B, if r = 0,2 m.

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(DYNAMICS, Chapter 17 - The principle of D'Alembert, paragraph - 17.3: kientostatiki method for solid state and mechanical system) 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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