A uniform heavy rod of weight W, cross-sectional area A and length L, and having Young’s Modulus E is hanging vertically from a fixed support. Neglecting lateral contraction, the elongation of the rod is given by:
1
\(\frac{{5WL}}{{3AE}}\)
2
\(\frac{{48WL}}{{AE}}\)
3
\(\frac{{WL}}{{2AE}}\)
4
\(\frac{{WL}}{{\left( {548AE} \right)}}\)