Problem S10.3. Consider a particle undergoing rotational Brownian motion. Write an expression for the angular velocity autocorrelation
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Problem S10.3. Consider a particle undergoing rotational Brownian motion. Write an expression for the angular velocity autocorrelation function for the rotating Brownian particle. Show that for long times it depends on time as follows:
where po is the fluid density, 7 is the shear viscosity, I is the moment of inertia of the sphere, and (2(0)), is the initial mean square angular velocity. (Hint: Use the result of Problem S10.2 for the friction coefficient.)
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