Problem # $1$

For the stressed soil element shown below:

A$.(15$ Points$)$ Draw the Mohr's circle for this combination and show the location of the origin planes $(Op).$

B$.(15$ Points$)$ Determine the magnitude of shear and normal stress on one of the planes where shear is maximum.

C$.(15$ Points$)$ Determine the major and minor principal stresses.

D$.$ Points$)$ Determine the stresses on a plane inclined $AE.$