The ratio of the section modulus of a square section of side B and that of a circular section of diameter D, is
If M, I, R, E, F, and Y are the bending moment, moment of inertia, radius of curvature, modulus of elasticity stress and the depth of the neutral axis at section, then
The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is
The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is
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