Mohr's circle is shown for a point in a physical object that is subjected to plane stress. Each grid square is 12 MPa in size. (a) Determine the stresses o, Oy, and the magnitude of Ty and show them on a stress element. (b) Determine the stresses an, O, and the magnitude of Tt and show them on a stress element that is properly rotated with respect to the x-y element. The sketch must include the magnitude of the angle between the x and n axes and an indication of the rotation direction (i.e., either clockwise or counterclockwise). Answer: MPa (a) Ox= MPa Oy = MPa Txy= (b) ơn= MPa MPa Tnt= MPa

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Solid Mechanics

Engineering mechanics is a branch of science that deals with forces causing bulk motion in bodies and the effect that these forces cause on the bodies. Engineering mechanics does not deal with the internal changes that occur on account of these external forces. The internal effects in a body or a material under the action of external forces are studied in a new branch of science called solid mechanics, the strength of materials, or the mechanical behavior of engineering materials.