The forces acting normally on the cross section of a bar shown in the given figure introduce_____________?
B. Tensile stress(Correct)
C. Shear stress
D. None of these
		A. Compressive stress
B. Tensile stress
C. Shear stress
D. None of these 
		A. It regains its original shape on removal of the load
B. It regains its original shape partially on removal of the load
C. It does not regain its original shape at all
D. None of these
		A. BD²/6
B. BD3/6
C. BD3/12
D. B²D/6