The viscosity equation F=6π*r*μ relates the force exerted by a fluid on a sphere moving through it to the sphere's radius and the fluid's viscosity. To derive this equation, one can start by applying Stokes' law, which describes the motion of small particles in a viscous medium. The discussion emphasizes the importance of showing effort when seeking help on such topics. Engaging with previous threads can provide valuable insights and foster community interaction. Overall, understanding the derivation of this equation is crucial for applications in fluid dynamics.