1. Jillson worked on the deformation of Zn single crystals in 1950. The cross-sectional area of the crystals chosen for expts was 122 x 10 m. Data from his work is provided below: loading Force between Angle direction & slip direction in Newtons (i) (ii) Angle between slip plane normal & loading direction 83.5 70.5 60 50 29 13. 18 29 4 203.1 77.1 51.7 45.1 26.5 35.3 44-3 30.5 40 62.5 54.9 78 109 86 318.5 Calculate the resolved shear stress and normal stresses acting on the slip plane when the yielding begins. 33.0 9.5 1-08 Comment on if resolved shear stress or normal stress would control yielding based on your calculations.