So we want to derive this equation. So, in biochemistry, this equation is used to describe or tell us the rate at which our object or particle sentiments inside our test tube as it rotates in a centrifuge. So let's begin by imagining our picture. So what is taking place within our test tube as it rotates with some angular velocity? So, let's suppose this is our test tube. The blue particle is some particle given by mass M. And this entire structure, the entire test tube, is rotating in the following direction with a given angular velocity of Omega.