One end of a wire of length \( L \) and weight \( w \) is attached rigidly to a point in roof an....

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One end of a wire of length \( L \) and weight \( w \) is attached
\( \mathrm{P} \)
rigidly to a point in roof and a weight \( w_{1} \) is suspended from its lower end. If \( A \) is the area of cross-section of the wire then the stress in the wire at a height \( \frac{3 L}{4} \) from its lower end is
(1) \( \frac{w_{1}}{A} \)
(2) \( \frac{w_{1}+\frac{w}{4}}{A} \)
(3) \( \frac{w_{1}+\frac{3 w}{4}}{A} \)
(4) \( \frac{w_{1}+w_{2}}{A} \)


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