I have found many sources to determine the weight or force needed for a balance moment, but not one that included the weight of the beam as a variable. I assume this is a very simple equation. Please help an old guy out. Thanks.
The beam is uniform and I know very little about physics. Believe it or not, this is for an art project about the theoretical weight of color.
I can get the 50 * 3 = 7x (21.428), but this does't include the beam weight.