10.4 Springs - Capstone Design As part of your Capstone Design Project, your group is using a helical compression spring shown below (link: https://www.mcmaster.com/9657K381/). Let's see how good our in-class equations are for estimating the spring scale, k, and the maximum load at solid length ymax for the spring. We will be able to compare our results with the numbers from the McMaster-Carr product page. From the product page, you can see that the spring is made of music-wire steel and the spring ends are squared (closed) and ground. You count Na = 30 active coils (confirm this in the image, see below). The listing also states that the spring has a total length of L0 = 2.000 in, and a compressed length at maximum load (solid length) of Ls = 0.770 in. The inner and outer diameters of the coil are 0.132 in and 0.18 in, respectively