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1. |
If a prismatic bar of uniform c / s ‘A’ and length ‘L’ is suspended from top, then the elongation of bar due to its self-weight only is ______. Where E is modulus of elasticity of bar material and γ is the density of bar. |
A. | \(\frac{{\gamma {L^2}}}{{2E}}\) |
B. | \(\frac{{\gamma {L^2}}}{{3E}}\) |
C. | \(\frac{{\gamma {L^2}}}{{5E}}\) |
D. | \(\frac{{\gamma {L^2}}}{{6E}}\) |
Answer» B. \(\frac{{\gamma {L^2}}}{{3E}}\) | |