Q1. Given the state of strains in the xy coordinate -2 01 Tel=12 [] -2 -3 0 x 10-6 0 0 a. Sketch the deformation of the strain element in the xy coordinate. b. A new coordinate XY is obtained by rotating xy clockwise about the z axis 30. Determine the state of strain in the XY coordinate and sketch the deformation of the strain element in the XY coordinate. c. Sketch the deformation of the strain element in the principal coordinate. Note the difference between the shear strain and the shear strain element, Yxy = 2exy.