Answer:
To determine the stress in the bar, we need to use the formula:
Stress = Force / Area
where:
Force = 15 kN (the tensile force applied to the bar)
Area = Time (the cross-sectional area of the bar)
Substituting the given values, we get:
Stress = 15 kN / Time
Therefore, the stress in the bar is 15 kN/Time. Note that the units of stress are usually expressed in pascals (Pa) or megapascals (MPa), so if the units of Time are not in meters (m), the units of stress need to be converted accordingly.
Step-by-step explanation: