The length of a conical bar is $$l$$, diameter of base is d and weight per unit volume is w. It is fixes at its upper end and hanging freely. The elongation of the bar under the action of its own weight will be
A. $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$
B. $$\frac{{{\text{w}}{l^2}}}{{4{\text{E}}}}$$
C. $$\frac{{{\text{w}}{l^2}}}{{6{\text{E}}}}$$
D. $$\frac{{{\text{w}}{l^2}}}{{8{\text{E}}}}$$
Answer: Option C
This Question Belongs to Mechanical Engineering >> Strength Of Materials In ME
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