4. When a body is subjected to a direct tensile stress (?) in one plane, then maximum normal stress occurs at a section inclined at
A. 45?
B. 0?
C. 90?
D. 30?
4. When a body is subjected to a direct tensile stress (?) in one plane, then maximum normal stress occurs at a section inclined at
A. 45?
B. 0?
C. 90?
D. 30?