At a certain point in a strained material, there are two mutually perpendicular stresses σ = 100 N/mm (Tensile) and σ = 50 N/mm (Compressive). [Notations : Tension (+); Compression (-) ]What are the values of the principal stresses in N/mm at that point ?

At a certain point in a strained material, there are two mutually perp

1.	At a certain point in a strained material, there are two mutually perpendicular stresses σ = 100 N/mm (Tensile) and σ = 50 N/mm (Compressive). [Notations : Tension (+); Compression (-) ]What are the values of the principal stresses in N/mm at that point ?
A.	100, -50
B.	-100, 50
C.	75, -25
D.	-75, 25
Answer» B. -100, 50

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At a certain point in a strained material, there are two mutually perpendicular stresses σ = 100 N/mm (Tensile) and σ = 50 N/mm (Compressive). [Notations : Tension (+); Compression (-) ]What are the values of the principal stresses in N/mm at that point ?

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