Question

The terminal velocity of copper ball of radius 2mm falling through a tank of oil at 20°C is 6.5m/s. Compute the viscosity of oil at 20°c. density of oil is 1.5 x 10^3 kg/m² and density of copper is 8.9x10^3 kg/m3​

Answer 1

Please use the attachment below. I hope it helps. This is not mine, I obtained it from another Brainly user, do reply if it was yours.