Question

Which statement about tensile stress is true? A. Forces that act perpendicular to the surface and pull an object apart exert a tensile stress on the object. B. Forces that act perpendicular to the surface and squeeze an object exert a tensile stress on the object. C. Forces that act parallel to the surface exert a tensile stress on the object. D. Forces that decrease the length of the material exert a tensile stress on the object.

Answer 1

The correct option is;

A. Forces that act perpendicular to the surface and pull an object apart exert a tensile stress on the object

Step-by-step explanation:

A material under tensile stress has axial forces tending to stretch the material and cause elongation. It is the force per unit area externally applied that results in stretching

The definition of tensile stress is the magnitude or amount of applied force on an elastic material divided by the cross-sectional area of the material perpendicular to the direction of the applied force

Therefore, the tensile stress comprises of forces that act perpendicular to a given surface pulling the sections apart.