Question

A wire is suspended from the ceiling and stretched under the action of weight F suspended from its other end. The force exerted by the ceiling on it is equal and opposite to the weight.
A. Tensile stress at any cross-section A of the wire is F/A
B. Tensile stress at any cross-section is zero
C. Tensile stress at any cross-section A of the wire is 2F/A
D. Tensile at any cross-section A of the wire is F

Answer 1

Correct Answer - A::D
As shown in the diagram
Clearly, forces at each cross-section is F.

Now applying formula, Stress = `("Tension")/("Area")= (F)/(A)`
Tension = Applied force = F