2. (10%) The figure is a drawing of a 3-by 18-mm latching spring. A preload is obtained during assembly by shimming under the bolts to obtain an estimated initial deflection of 2 mm. The latching operation itself requires an additional deflection of exactly 4 mm. The material is ground high-carbon steel, bent then hardened and tempered to a minimum hardness of 490 Bhn. The radius of the bend is 3 mm. I (a) Find the maximum and minimum latching forces. (b) Is it likely the spring will fail in fatigue? Why? Dimensions in millimeters.. A 100 -18- Section A-A