railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Simple Stress and Strain Deflection of Bar
Choose the INCORRECT option for the equation of elongation of a uniform rod having length L due to the self-weight W.
1
\(\delta = \frac{{WL}}{{2AE}}\)
2
\(\delta = \frac{{2WL}}{{AE}}\)
3
\(\delta = \frac{{WL}}{{AE}}\)
4
\(\delta = \frac{{2WL}}{{AE}}and\;\delta = \frac{{WL}}{{AE}}both\)