Part B Consider a metal bar of initial length L and cross-sectional area A. The Young's modulus of the material of the bar is Y. Find the "spring constant" k of such a bar for low values of tensile strain. Express your answer in terms of Y, L, and A. • View Available Hint(s) ? k = Submit Part C Ten identical steel wires have equal lengths L and equal "spring constants" k. The wires are connected end to end, so that the resultant wire has length 10L. What is the "spring constant" of the resulting wire? • View Available Hint(s) O 0.1k O k O 10k O 100k

How are stress and performance related?    A. Negatively linear: higher stress leads to lower performance   B. Curvilinear: the relationship is positive at lower level of stress but turns to negative as stress increases   C. No relationship   D. Positively linear: higher stress leads to higher performance

What FAv and FAH stand for in the solution