Final answer:
To calculate the shear strains at point A, we use the equation for shear strain and substitute the given values. The shear strain γx’y’ is the same as γxy.
Step-by-step explanation:
To determine the shear strains γxy and γx’y’ at point A, we need to use the equation for shear strain:
γxy = Δx / a
Substituting the given values, we have:
γxy = 1.4 mm / 750 mm = 0.0018667
Since the deformation is shown by the dashed line, the shear strain γx’y’ at point A is the same as γxy,
γx’y’ = 0.0018667.