An element in plane stress is subjected to stresses o , o , and 7 y (see figure). Using Mohr's circle, determine (a) the principal stresses and (b) the maximum shear stresses and asso- ciated normal stresses. Show all results on sketches of properly oriented elements. o,=0 MPa, a,= -23.4 MPa, Ty = -9.6 MPa Txy

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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.