Civenc

A rod has a solid circular cross section with a dimeter of $50$ mm is subjected to the shown loads deterimine the state. of stress at point A$.$

Given:

the area moment of inertia of a solid circular cross section about its neutral axis is iNA$=(\backslash$pi $/$R$^4)/4$

the polar moment of inertia of a solid circular cross section about its neutral axis jNA$=(\backslash$pi R$^4)/2$

the centroid of a semicircle located at $4$R$/(3\backslash$pi $)$