Question

Find the terminal velocity of a steel ball 2 mm in diameter falling through glycerin. Relative

density of steel = 8, Relative density of glycerin = 1.3 and viscosity of glycerin = 8.3 poise.​

Answer 1

Explanation:

Circumference = 2πr = 132. ⇒ 2 × 22/7 × r = 132. ⇒ r = (7 × 132)/(2 × 22). ⇒ r = 21 cm. Therefore, area of circle = πr². = 22/7 × 21 × 21.