2. Problem 8.30 (page 364, 5th ed), please see Appendix C-4a on Page 822 for material properties. 8.30 The shaft illustrated in Figure P8.30 rotates at high speed while the imposed loads remain static. The shaft is machined from AISI 1040 steel, oil-quenched and tem- pered at 1000°F. If the loading is sufficiently great to produce a fatigue failure (after perhaps 10 cycles), where would the failure most likely occur? (Show all necessary computations and reasoning, but do not do unnecessary computations.) Flb 3 in. 3 in. -2 in. 2 in.- I in. in, dia. 2 R FIGURE P8.30 1½ in. dia. 10 R dia. -199 28 62 D ib