Major principal stress=8mN/m$^{2}$

Minor principal stress=2mN/m$^{2}$

Angle of inclination of rupture plane is 60$^{\circ}$ to the horizontal. Present the above data by means of a Mohr's circle of stress diagram. Find the Cohesion and angle of internal friction.

• The minor and major principal stresses are plotted as OA and OB to a convenient scale on the σ-axis. The mid-point of AB is located as C. With C as centre and CA or CB as radius, the Mohr’s stress circle is drawn.
• Angle BCD is plotted as 2θcr or …