15.6.6. K AB shaft rigidly affixed uniform horizontal rod length l = 2 m and m = mass of 12 kg. Val communicated to the angular velocity ω0 = 2 rad / s. Left to himself, he stopped making 20 turnovers. Determine the point of friction in the bearings, considering it constant.

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(Chapter 3 - Dynamics theme - 15.6 Theorem of the kinetic energy of a solid change) 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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