Elongation produced due to self weight in a bar of uniform cross sectional area 'A', length 'l', and weight 'W' having modulus of elasticity 'E', hung vertically at top end is
1
\(\frac{2WI}{AE}\)
2
\(\frac{2WA}{EI}\)
3
\(\frac{WI}{2AE}\)
4
\(\frac{WI}{4AE}\)
5
\(\frac{4WI}{AE}\)