20.4.5. Body weight m = 20 kg slides down on a smooth surface. To determine the kinetic body potential at a time when the body coordinate s = 2 m and the velocity v = 3 m / s. body potential energy n0 take zero at the position where the coordinate s = 0.

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(DYNAMICS, Chapter 20 - Lagrange equation of the second kind, paragraph - 20.4: The kinetic potential) 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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