What is the formula of elongation of a conical bar (with length L and self-weight W) due to its self-weight?
1
\(\frac{{WL}}{{2{A_{min}}E}}\)
2
\(\frac{{W{L^2}}}{{2{A_{min}}E}}\)
3
\(\frac{{WL}}{{2{A_{max}}E}}\)
4
\(\frac{{W{L^2}}}{{2{A_{max}}E}}\)
5
\(\frac{{WL}}{{3{A_{max}}E}}\)