Sorry for my bad english in advance I am not a native speaker. I have a system similar to the one above and we are supposed to statically and then dynamically balance it. To statically balance it we are told to set two of the masses to arbitrary angles, we chose 90 degrees away from each other. We were then told to create a vector diagram, where the lengths of the vectors correspond to the mass*radius values for each of the 4 masses. By creating a complete shape we managed to find the angles of the other two masses for which to statically balance. I understand why we do this and theory behind it.
I can follow the instructions but I do not understand why this should be done and how this relates to dynamic balancing. Would someone please be able to explain why?