One end of a uniform wire of length \( L \) and of weight \( w \) is attached rigidly to a point... VIDEO
One end of a uniform wire of length \( L \) and of weight \( w \) is attached rigidly to a point in the roof and a weight \( w_{1} \) is suspended from its lower end. If \( S \) is the area of cross-section of the wire, the stress in the wire at a height \( 3 L / 4 \) from its lower end is
(a) \( \frac{w_{1}}{S} \)
(b) \( \frac{w_{1}+(w / 4)}{S} \)
(c) \( \frac{w_{1}+(3 w / 4)}{S} \)
(d) \( \frac{w_{1}+w}{S} \)
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