As a result of loading, the rectangle shown in Fig. P2.11 deforms into a parallelogram...

As a result of loading, the rectangle shown in Fig. P2.11 deforms into a parallelogram

in which sides QA and BC shorten 0.003 mm and rotate 500 μ

radian counterclockwise while sides AB and QC elongate 0.004 mm and

rotate 1000 μ radian clockwise. Determine the principal strains and the

direction of the principal axes at point Q.Take a=20 mm and b=12 mm.