I'm trying to calculate Stoke's drag constant using the equation found here.
The system I wish to calculate it for is a mass oscillating vertically on a spring through air. The temperature is 25 degrees celsius. The area of the base of the mass is 4.9x10^-4 square metres.
I'm not sure how to find the 'fluid viscosity' in the linked equation, or what 'Stoke's radius' is.