Answer:
a)True
Explanation:
Yes it is true that principle stresses are the function of σx,σy and τxy.
We know that principle stresses σ1,σ2 given as follows
[tex]\sigma_1,\sigma_2=\dfrac{\sigma_x+\sigma_y}{2}\pm \sqrt{\left ( \dfrac{\sigma_x+\sigma_y}{2} \right )^2+\tau _{xy}^2}[/tex]
Where σx ,σy are the normal stresses and τxy is shear stress.
σ1 is the maximum principle stress and σ2 is the minimum principle stress.
