1. The problem statement, all variables and given/known data A 1.5-mm-diameter steel ball bearing (7830 kg/m^3) is dropped into a tank of SAE 30 oil. What is its terminal velocity? The density of oil is 917kg/m^3, and the viscosity of oil is 0.26kg/(m*s). Help is much appreciated! 2. Relevant equations Force of drag = 1/2 * (density of fluid) * (area of sphere) * v^2 * (coefficient of drag) Force of drag = 3 * pi * (coefficient of fluid) * (diameter of obj) * v Coefficient of drag = 24 / (Reynolds number) Reynolds number = (density of fluid * velocity of fluid * chracteristic length)/(viscosity of fluid) 3. The attempt at a solution When I combine all the equations, the v's cancel out. Is there a different equation I should be using?