Question

The CGS unit for measuring the viscosity of a liquid is the poise (P): 1 P = 1 g/(s · cm). The SI unit for viscosity is the kg/(s · m). The viscosity of water at 80°C is 3.55 10-4 kg/(s · m). Express this viscosity in poise.

Answer 1

GIven 1 Poise (P) =1 g/(s.cm)

1 Kg =1000 g

1 m =100 cm

$=3.55\times10^{-4}Kg/s-m$

$=3.55\times10^{-4}\frac{Kg}{s-m}\times1000 \frac{g}{Kg}\times \frac{m}{100 cm}=3.55\times 10^{-3}g/s-cm$

$=3.55\times 10^{-3} P$