The beam has a rectangular cross section and is subjected to the loadings shown in Figure 1. Determine the principal stresses at point A and point B, which are located just to the left of the 15-kN load. Show the results on elements located at these points and its orientation angle.

Consider a cantilevered beam which is made of two identical. rectangular sections, a force P is applied at free end. 11) if A and B are not clued together, determine the bending stress distribution at a-a cross section, draw o Chint: each section carries P/ and label the Tout at the outest fibers. * 0.5m a 12) if we weld the two A & B together along the member length. determine the bending stress distribution, draw and laber. m ✓ P=1kw A 181- дет B зст

Q4: For the figure below, determine the principal stresses and show them on a sketch of a properly oriented element. Also, find the maximum shear stresses and show them on a sketch of a properly oriented element. (Consider only the in-plane stresses.) -30MPA 90 MPa -34MPA

When the temperature is at 30°C, the steel pipe fits snugly between the two fuel tanks. When fuel flows through the pipe, it causes the temperature to vary along the pipe as T = (3x² 20x + 120)°C. Calculate the normal stress developed in the pipe. Assume each tank provides a rigid support at A and B. a=12X10-6/°C - 150 mm 10 mm- Section a - a -6 m a a B