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.

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` fo the wrie is `2F//A`
D. Tension at any cross-section `A` fo the wire is `F`.

Answer

A, D

Explanation

Force at each cross-section is `F`
Tension stress
`= ("Force applied")/("Area of cross-section") = (F)/(A)`