I am currently working on a physics project. The idea is a measure rate of rotation of different gymastics flips (i.e tuck, twist, layout, pike). I calculated the moment of inertia for each of the different positions. I then taped a gymnast preforming the different flips on a trapoline. I then found how long it takes her to do one full rotation for each position. This was done repeatley for each position. I then took the ratio the different positions. I am trying to get my math calcs to support my experimental data. I tried taking the ratio of the moment of inertia of the positions. I thought that would match up with the experimental ratio, but it didn't. They were in the same order but the values were off. IF you have any ideas about what I should do, or if you think it is because of experimental error please tell me. I am open to any advice. Thanks for you time.