14.3.19. The body 1 2 kg by the spring moves relative to the body weight of 2 kg for 8 law s = 0,2 + 0,05cosπt. The body 2 can slide on horizontal guides. Determine the speed of the body 2 at time t = 2 s, when it began to move from a state of rest.

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(Chapter 3 - Dynamics theme - 14.3: The theorem of change of momentum) 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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