For the Mohr’s circle shown below, major and minor principal stresses are represented by :

Concept:

Mohr's Circle:

• Mohr's circle is a graphical method of finding normal, tangential, and resultant stresses on an oblique plane.

Mohr's circle will be drawn for the following cases :

1. A body subjected to two mutually perpendicular principal tensile stresses of unequal intensities.
2. A body subjected to two mutually perpendicular principal stresses which are unequal and unlike (i.e., one is tensile and other is compressive ).
3. A body subjected to two mutually perpendicular principal tensile stresses accompanied by a simple shear stress.

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Similarly,

In the given figure minor principal stress is represented by OB (σ₂) and major principal stress is represented by OA (σ₁).