Consider a structure including the horizontal beam AB hinged to the wall at point A and supported by steel bar at point B, as shown. The length of the beam is L = 3.7 m and its weight is W = 450 N. The length of the steel bar is h = 2.5 m and its radius is r = 1.2 cm. The elastic modulus of the steel bar is E = 200 GPa. _(a) Draw the free body diagram (FBD) of the horizontal beam AB ; (b) Draw the FBD of the steel bar; Determine (c) the magnitude of the reaction force, RA, at point A; (d) the tensile stress, o, exerted by the beam on the steel bar; (e) the tensile strain, ɛ, developed in the steel bar h

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Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.