Problem $07\mathrm{.}026-$ Combined loading: determine principal stresses and maximum shear stress.

The steel pipe $AB$ has a $102-mm$ outer diameter and a $6-mm$ wall thickness. Knowing that arm $CD$ is rigidly attached to the pipe, determine the principal stresses and the maximum shearing stress magnitude at point $K.($Round the final answers to one decimal place.$)$

Given: $F=15kN$

The principal stresses are ${}_{\text{m}\text{a}\text{x}}=$ MPa and ${}_{\text{m}\text{i}\text{n}}=$ tensile; $-$ compressive$).$

The maximum shearing stress magnitude is $$ MPa.