In a piece of stressed material, the principal stress are σ1=3.0 kN/m2 tensile and σ2=7.0 kN/m2 compressive as shown in the diagram below.The line of action of the tensile stress makes an angle θ=30° to the normal to the plane AB. What is the normal stress σn?

In a piece of stressed material, the principal stress are σ1=3.0 kN/m

1.	In a piece of stressed material, the principal stress are σ1=3.0 kN/m2 tensile and σ2=7.0 kN/m2 compressive as shown in the diagram below.The line of action of the tensile stress makes an angle θ=30° to the normal to the plane AB. What is the normal stress σn?
Answer» In a piece of stressed material, the principal stress are $σ_{1} = 3.0 k N / m^{2}$ tensile and $σ_{2} = 7.0 k N / m^{2}$ compressive as shown in the diagram below. The line of action of the tensile stress makes an angle $θ = 30 °$ to the normal to the plane AB. What is the normal stress $σ_{n}$ ?

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In a piece of stressed material, the principal stress are σ1=3.0 kN/m2 tensile and σ2=7.0 kN/m2 compressive as shown in the diagram below.The line of action of the tensile stress makes an angle θ=30° to the normal to the plane AB. What is the normal stress σn?

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