Two of the principal stresses at a point are 130 MPa and 90 MPa. What is the safe range of the third principal stress at the point by using maximum shear stress theory ? (Take the failure stress in tension as fy = 210 N/mm2)
1
-80 MPa \(\leq \sigma \leq \) 300MPa
2
-155MPa \(\leq \sigma \leq \) 210 MPa
3
-112 MPa \(\leq \sigma \leq \) 222 MPa
4
-210 MPa \(\leq \sigma \leq \) 210 MPa