Question

The magnitude of the only shear stresses acting at a point in plane stress situation is $7.5N/m{m}^2$. The magnitudes of the principal stresses will be :

• A. $+15.0/N/m{m}^{2}and-7.5N/m{m}^2$
• B. $+7.5/N/m{m}^{2}and-15.0N/m{m}^2$
• C. $+7.5/N/m{m}^{2}and-7.5N/m{m}^2$
• D. $+10.0/N/m{m}^{2}and-7.5N/m{m}^2$

Answer 1

The correct option is C $+7.5/N/m{m}^{2}and-7.5N/m{m}^2$

Diagram (I)
Diagram (II)