Pr#5: (10 pts) A 26-tooth pinion rotating at a uniform 1800 rpm meshes with a 55-tooth gear in a spur gear reducer. Both pinion and gear are manufactured to a quality level of 10. The transmitted tangential load is 22 kN. Conditions are such that Km=1.7. The teeth are standard 20-degree, full-depth. The module is 5 and the face width 62 mm. 1. Determine the bending stress. 2. Determine the contact stresses. 3. Select a suitable material to insure bending factor of safety = 2 4. Calculating wear factor of safety.