Assume any missing data you may need. Consider safety and cost realistic constraints. Answer The following questions:- 1- A hand cranking lever, as shown in Fig. 5.37, is used to start a truck engine by applying a force F-400k N. The material of the cranking lever is AISI 1040 CD Young's modulus - 205 GPa; Modulus of rigidity=84 GPa and poison's ratio 0.3. Assuming factor of safety to be 4 based on yield strength, design the diameter 'd' of the lever at section X-X near the guide bush using Maximum distortion energy theory. (65 points) 2- If the bush's hub is fixed with the crank lever by interference fit. Select a suitable fit designation and check the total stresses on the shaft due to the fit and the applied load. Assume the length of the hub is 2d. (35 points) Hub of bush X 400 mm X 4WN 200 mm