Figure 3 shows a portion of a pump that is gear-driven. The shaft is supported by bearings mounted in a pump housing. The shaft is made of steel with Sut= 1000MPa and Sy = 600MPa. The tangential component (2000 N), axial component (500 N), and radial component (750 N) of the force applied to the gear in their fixed directions are shown. (a) Locate the most critical point (b) Plot the 3D stress element for that point (c) Calculate the stresses (you can neglect the transverse shear stresses) (d) Convert them to principal stresses 2000 N Helical spur gear 750 N 25-mm solid round shaft 500 N -250-mm dia. MILITA Fillet 50 mm- Figure 3. Forces on the shaft