# Sedimentation and svedberg equation

From the equations in the attached file develop an expression to help answer the following:

Under the conditions of Fsed=Ffriction and given (1-pv) and w are constant, what physical properties of a particle would influence the sedimentation velocity of that particle moving through a sample cell under the influence of the above centrifugation forces?

Give examples of changes in these physical properties and how these changes affect the sedimentation velocity v of the particle as well as the s value (sedimentation coefficient).

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#### Solution Preview

I will represent omega with "w." Capital V will be used to represent Vp, p is used as the Greek letter rho, which looks like a p.

Since the Fsed and Ffriction are equal, we can set equal the components of those equations

mw^2r-Vpw^2r = vf

A few different properties immediately present themselves as important. The mass of the sample m and the length of the rotor radius can be varied to achieve different effects. In ...

#### Solution Summary

In this solution we consider the svedberg equation for determining the sedimentation velocity given a certain angular momentum. See the questions for more details