Hi all, I am wondering if someone can please help me with determining the mathematical relationships concerned with magnetic oscillation. My experimental design is as follows: A thin pole is positioned vertically and two ring magnets are placed on it (North Poles facing). The "top" magnet is raised to a point 20 centimeters above the bottom magnet, and it is released. The top magnet is allowed to oscillate. Can someone please help me with determining ANY mathematical relationships to do with this topic, such as a position versus time equation. Also, if someone would be able to recommend a program that will perform curve-fits for cosine functions, it would be much appreciated. Thanks, RC.