$4\mathrm{.}8[$Section $4\mathrm{.}4]$ For the stretched bar in

Example $4\mathrm{.}1,$ do the following:

Determine the plane of maximum shear stress in the deformed configuration and the value of the Cauchy shear stress on this plane.

Determine the material plane in the reference configuration corresponding to the plane of maximum shear stress found above. Plot the angle $$ between the normal to this plane and the horizontal axis as a function of the stretch in the $1-$