Question

A capillary tube of diameter 2 mm and length 100 mm is used for measuring viscosity of a liquid. The difference of pressure between the two ends of the tube is 0.6867 n/cm2 and the viscosity of liquid is 0.25 poise. Find the rate of flow of liquid through the tube.

Answer 1

Answer:

To measure viscosity, fill a graduated cylinder with the liquid to be measured and mark the liquid's positions at the top and bottom of the cylinder. Drop a marble into the liquid and start a stopwatch, then record the time it takes for the ball to drop between the marks.