Q 11-08-002NEETNEET 2023Top questionEasy
Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $W$ attached at its free end. The longitudinal stress at any point of cross-sectional area $A$ of the wire is :
Answer: (B) $W/A$
The (light) wire carries the tension $W$ everywhere along its length.
$$\text{Longitudinal stress} = \frac{\text{force}}{\text{area}} = \frac{W}{A}$$
Solution by Sreeraj P, M.Sc Physics