If these particles have the same shape, have the same size, have the same density, but they have different masses, the mass that is greater will basically move with a higher sedimentation coefficient. So we'll have a higher sedimentation speed. So if the mass of the blue particle is greater than the mass of the green particle, but the size and shape is the same, then the higher mass travels down a test tube more rapidly. And that can be seen from the following diagram. Because if everything is kept constant but the mass is increased, this S value will increase. And we know the high this S value is, the faster the move of the particle along that test tube is.