Tusenfem

Draw a graph of a vacuum or gravity force field so that the forces on the radius, either side of the maximum force point are equal to each other.
Measure the force at each unit of radial distance and total these measurements to obtain the total linear force. Do this with the elementary particle radii as predicted by the Constant Linear Force model and confirmed using de Broglie's wave formula; (using the mass value as the maximum force) and you will find that all particles have the same linear force. Hence the Linear Force Constant.
Mass is related to force because it acts as the force carrier.