Find the terminal velocity of a steel ball 2 mm in diameter falling through glycerine. Relative density of steel is 8, relative density of glycerine is 1.3 and viscosity of glycerine is 8.3 poise.

Find the terminal velocity of a steel ball 2 mm in diameter falling th

1.	Find the terminal velocity of a steel ball 2 mm in diameter falling through glycerine. Relative density of steel is 8, relative density of glycerine is 1.3 and viscosity of glycerine is 8.3 poise.
Answer» Solution :`v = 2/9 (r^2)/(eta) (rho - rho.) g = 2/9 ((0.1)^2)/(8.3 (8 - 1.3) XX 9.8` `v = 1.758 cm s^(-1)`