The material point mass m = 18 kg moves in a horizontal plane along a curved path by a force F = 25 N. Define the radius of curvature of the path at the time point when the velocity v = 4 m / s, and the force and velocity vectors forming an angle of 55 °

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(Chapter 3 - Dynamics theme - 13.1: Defining the parameters of curvilinear motion by the given forces) from 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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