Figure Q2 (b) shows a strain rosette that is attached on the surface of a production equipment.The strain readings are εa = -200(10-6), εb = -65(10-6) and εc = 130(10-6).i) Determine the in-plane...

 Figure Q2 (b) shows a strain rosette that is attached on the surface of a production equipment.
The strain readings are εa = -200(10-6), εb = -65(10-6) and εc = 130(10-6).
i) Determine the in-plane principal strains and sketch the strain element.
ii) Determine the maximum in-plane shear strain and sketch the strain element.
iii) What is the angle of orientation (with respect to x-axis) that leads to εx’ = 0?