Question 2
The solid square and dashed parallelogram in Figure 2 represent the strain elements before and after the deformation, respectively.
Which set of strains matches the figure?
\text{a.} \quad \epsilon_x = 100 \text{ } \mu\epsilon, \epsilon_y = -50 \text{ } \mu\epsilon \text{ and } \gamma_{xy} = -150 \text{ } \mu\epsilon
\text{b.} \quad \epsilon_x = 100 \text{ } \mu\epsilon, \epsilon_y = 50 \text{ } \mu\epsilon \text{ and } \gamma_{xy} = 150 \text{ } \mu\epsilon
\text{c.} \quad \epsilon_x = -100 \text{ } \mu\epsilon, \epsilon_y = -50 \text{ } \mu\epsilon \text{ and } \gamma_{xy} = -150 \text{ } \mu\epsilon
\text{d.} \quad \epsilon_x = -100 \text{ } \mu\epsilon, \epsilon_y = 50 \text{ } \mu\epsilon \text{ and } \gamma_{xy} = 150 \text{ } \mu\epsilon