SSC SSC JE Mechanical 2025 Mock Test Series (Paper 1 & Paper 2) Strength of Materials Simple Stress and Strain Deflection of Bar
Select the correct expression to calculate the change in length of the portion BC of the bar ABCDE, in the given figure.
(Given, E = Young's modulus of elasticity, L2 = length of portion BC and A = cross-section area of the portion BC; ignore the units of the all the quantities)
1
\(\frac{4 L_2}{A E}\)
2
\(\frac{E L_2}{8 A}\)
3
\(\frac{8 L_2}{A E}\)
4
\(\frac{6 L_2}{A E}\)