As elastic bar of length 'l', cross-sectional area A, Young's modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.

As elastic bar of length 'l', cross-sectional area A, Young's modulus

1.	As elastic bar of length 'l', cross-sectional area A, Young's modulus of elasticity E and self-weight W is hanging vertically. It is subjected to a load P applied axially at the bottom end. The total elongation of the bar is given by.
A.	<i>WI/AE + PI/AE </i>
B.	<i>WI/2AE + PI/AE </i>
C.	<i>WI/2AE + PI/2AE</i>
D.	<i>WI/AE + PI/2AE</i>
Answer» C. <i>WI/2AE + PI/2AE</i>