Question 31 [30 pts. 12 mm D -- 0.5 mm 400 mm x А -300 mm B 14 mm I'mm The shown above piece of plastic is originally re

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Question 31 [30 pts. 12 mm D -- 0.5 mm 400 mm x А -300 mm B 14 mm I'mm The shown above piece of plastic is originally rectangular. if the plastic distorts to become the parallelogram shown by the dashed lines, You are required to determine the following: a. the average normal strain that occurs along the side AD [10 Pts b. the shear strain at corner D, with respect to the x and y axes (10 Pts) c. the shear strain at corner A, with respect to the x and y axes (10 Pts NOTE: support your answer with sketches.