The terminal velocity of a sphere of radius 0.01 m is 0.5 m/s. What is the viscosity of the fluid?
Q1. The terminal velocity of a sphere of radius 0.01 m is 0.5 m/s. What is the viscosity of the fluid?
Answer: 1.67 Pa·s
Explanation: η = (2r²ρg)/(9v) = (2 * (0.01 m)² * ρ * 9.8 m/s²) / (9 * 0.5 m/s); assuming ρ = 1000 kg/m³, η = 1.67 Pa·s; correct application of Stokes' law, but density not given.