NOTE: Solutions must include complete sketches and Free-Body Diagrams, and complete equations WITH APPROPIATE SYMBOLS, JUST NUMBERS WILL NOT BE GRADED. Work must be NEAT, COMPLETE and ORGANIZED ("spaghetti-type" or unreadable

work will NOT be graded). Used methods MUST be of class and textbook; all answers must be fully justified by shown work. Exercise 1 (50%): A beam has the section shown in the figure, and a shear force V = 2,000 lb is applied as in the figure. Compute Maximum shear stress AND Shear stress at B (above the line). You must (in this order): (i) (ii) Sketch GRAPHICAL complete NEAT breakdown of beam section to carry out computations that follow Compute from (i) the Moment of Inertia I of section (all used symbols/numbers AND RESULTS must be there, clear and legible; it must match breakdown of above (i)) (iv) Compute "Q" values of the section for points of maximum shear stress and for point B (above the line), and determine "t" for each Compute Maximum Shear stress and the Shear stress at point B (units ARE needed) 4" 6" ANSWERS: Maximum shear stress = Shear stress at B =