Q113 / 200 · NEET 2023 (All India) · Physics

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:

A
Zero
B
$\frac{2 W}{A}$
Correct answer
C
$\frac{W}{A}$
D
$\frac{W}{2 A}$

Solution

Longitudinal stress is given by,
$s t r e s s = \frac{f o r c e}{a r e a} = \frac{W}{A}$
In case of ideal wire, stress at each point will be the same and will be equal to $\frac{W}{A}$ .

Hence, the correct answer is option: 'C'.

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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:

Solution

Relevant Questions

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: