Question:
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.
(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
Solution:
The correct answers are
(a) tensile stress at any cross-section A of the wire is F/A
(d) tension at any cross-section A of the wire is F