The states of stress at two points in a loaded beam are represented in Fig. P1.26a and b...

The states of stress at two points in a loaded beam are represented in Fig. P1.26a and b. Determine the following for each point: (a) The magnitude of the maximum and minimum principal stresses and the maximum shearing stress; use Mohr’s circle. (b) The orientation of the principal and maximum shear planes; use Mohr’s circle. (c) Sketch the results on properly oriented elements. Check the values found in (a) and (b) by applying the appropriate equations.