A wire is suspended from the ceiling and stretched under the action of a weight F suspended from its other end. The force exerted by the ceiling on it is equal and opposite to the weight.

Options

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. Tension at any cross section A of the wire is F.

Answer

A, D

Explanation

At every cross section for the wires suspended from ceiling force exerted is F.
Now Stress = `("Tensile force ")/("Area") = F/A`
`therefore` Tensile force T = Force F exerted.