Using a stress element and Mohr's circle, demonstrate how it is possible for an element that shows a stress state with compressive forces in both axial directions exists in a beam that ultimately fails in tension $($e$.$g$.$ concrete$).$ Hint: the center of a Mohr's circle for an an element with compressive forces is centered on the negative side of the $$ axis. Feel free to use numerical examples and$/$or screen shots from a Mohr's circle calculator to answer this question.