Ditto.billy_joule said:I agree with your answer. The given answer makes sense if the question asked for longitudinal stress, so it may be a typo.
Strain is a measure of the deformation or elongation of a material in response to an applied force. It is a dimensionless quantity and is typically expressed as a percentage or decimal value.
Strain is calculated by dividing the change in length or deformation of a material by its original length. This can be expressed as a formula: strain = change in length / original length.
Tensile strain is the elongation of a material in response to an applied pulling force, while compressive strain is the reduction in length of a material in response to an applied pushing force.
Strain can affect the mechanical properties of a material by altering its strength, stiffness, and ductility. Excessive strain can cause a material to fail or break, while controlled strain can improve the material's performance.
Several factors can influence strain in materials, including the type of force applied, the magnitude of the force, the material's composition and structure, and the temperature and environmental conditions in which the material is tested.