In assessing the strength of a wrench a 45 strain rosette is mounted near the tooth of the wrench, as shown in Figure 4.0a. Figure 4.0b shows a detailed configuration of the 45 strain rosette. The following readings are recorded for each gauge: ,- 800x10, e, - 520x10", and e, -450x10*. (a) Determine the in-plane principal strains based on the recorded strain readings. (b) Determine the maximum in-plane shear strain and the associated normal strain. 45 strain