Hey.. This is a question I received as part of my homework Your great grandmother gave you an antique scale that her great grandmother gave to her. It consists of a square platform mounted on 4 identical springs. When you step on the platform, you compress the springs, causing the platform to descend slightly, A needle indicates by how many centimeters you have descended. Unfortunately the conversion to useful units (like stone, or poundals) has been lost. However, your great-grandmother also gave you an extra spring, and on its label it says that the spring constant is 1.5 × 10 4N/m. When you get on the scale you cause the platform to descend by 0.98cm. What is your mass? I have no idea how to go about solving this problem or what equations to use but, do I have to use the principles of conservation of energy for this? Equating gravitational to spring? Thanks!