Question

in an experiment the following readings were observed volume of alcohol flowing per minute equals to 10 raise to power - 5 cube volume density of alcohol is 800 kg per metre cube length of cube is 0.5 m radius of tube is 0.05 cm height of alcohol is 60 cm calculate the coefficient of viscosity of alcohol​

Answer 1

The viscosity is 1.30 x 10^-3 deca poise.

Step-by-step explanation:

Volume per minute, V = 10^-5 m^3

Volume per second, V = 1.67 x 10^-7 m^3

density, d = 800 kg/m^3

radius, r = 0.05 cm

Length, L = 0.5 m

Height, h = 60 cm

Pressure, P = h d g = 0.6 x 800 x 9.8 = 4704 Pa

Use the formula of rate of flow

`V = (\pi p r^4)/(8\eta L)\\\\1.67* 10^(-7)*8* \eta* 0.5 = 3.14* 4707* (0.05* 10^(-2))^4\\\\\eta = 1.38* 10^(-3) deca poise`