Home › CBSE Class 11 (Science) › Physics › Mechanical Properties of Solids › A wire hangs from a ceiling with weight F at its…
A wire hangs from a ceiling with weight F at its end. What is the tensile stress at any cross-section of area A?
AF divided by 2A
BF divided by A
C2F divided by A
DF multiplied by A
Answer & Solution
Correct answer: B. F divided by A
The tension at any cross-section equals F, not 2F, because the ceiling force and weight are one action-reaction pair, so stress is F/A.
Related questions
For small strains, the stress-strain curve can be approximated as what?A more porous solid generally shows what compared with a dense one?What did Hooke's Latin phrase "Ut tensio, sic vis" mean?Which scientist first formulated the linear force-extension law in 1675, published in 1678On what scale is the elastic modulus of most common engineering materials?Which dimensions does the elastic modulus carry in terms of L, M and T?What is the SI unit of the elastic modulus?What does the elastic limit (yield strength) of a material represent?