3P 2P P ° + -2P 3PL3 2P3 PL ° - PL3 Figure 11: The shear (above) and moment (below) diagrams for a beam of length le are shown. P is a known parameter with dimensions of force. The cross section of the beam is shown (right). Use this Figure for Problem 11. 11. (6.6 pts.) Given a beam with rectangular cross section and shear and moment diagrams in Figure 11, (i) find the position along the length of the beam at which the largest magnitude bending stress occur, max. and (ii) sketch the bending normal stress distribution as a function of position within the cross section e(s. 2) at (a) (b) @ 42 +514 151