question_answer

One end of 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 \[\left( \frac{3L}{4} \right)\] from its lower end is

A) \[\frac{{{W}_{1}}}{s}\]                        

B) \[\left[ {{W}_{1}}+\frac{W}{4} \right]s\]

C) \[\left[ {{W}_{1}}+\frac{3W}{4} \right]/s\]

D)        \[\frac{{{W}_{1}}+W}{s}\]