Elongation of a bar of uniform cross section of length „L?, due to its own weight „W? is given by
A)2WL/E
B)WL/E
C)WL/2E
D)WL/3E

Question

Quizplus · Accepted Answer

The elongation of a bar due to its own weight can be calculated using the formula $ \Delta L = \frac{W L}{2 A E} $, where $W$ is the weight of the bar, $L$ is the length of the bar, $A$ is the cross-sectional area, and $E$ is the modulus of elasticity. Since the area $A$ is not explicitly mentioned in the options and considering the formula simplifies to $ \Delta L = \frac{WL}{2E} $ when considering the weight per unit area, option C is correct.

Elongation of a Bar of Uniform Cross Section of Length