15.3.14. On an inclined plane down without initial velocity A mass m. What is the velocity v will have a load of his way, equal to 4 m from the beginning of the movement, if the coefficient of friction between the load and the inclined plane is 0.15?

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(Chapter 3 - Dynamics theme - 15.3: The theorem of change of kinetic energy of the material point and rigid body in translation) 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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