18.3.4. A mechanism consisting of gears 1, 2 to the number of teeth z2 = 2z1 drum 3 and is rigidly fastened to the wheel 2 moves uniformly load weighing 4 4 x 103 N. Define moment of couple M, if the coefficient of sliding friction load f = 0, 2 and the drum radius r = 10 cm.

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(DYNAMICS, Chapter 18 - The principle of possible displacements, paragraph - 18.3: The principle of possible displacements) 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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