Question

2.8 cgs units. -An alternative system of units to SI is the cgs system, in which the unit of mass is the gram (g) and the unit of length is the cen timctre. Establish the following conversion table (which is really here for your reference) and construct the reverse table to turn SI into cgs. Cgs SI 1 cm s1 -3 velocity density dynamic viscosity 1 kinematic viscosity em2s 10-2 ms 10* kg m3 10-lkg m-'s- 10 m2 s-i cm pressure energy force surface tension |dyne cm-2 10-1 Pa 1 erg 1 dyne 1 dyne cm0Nml 10-7 J 10- N

Answer 1

Velocity = > 1 cms^-1 since 1 cm = 10^-2 m = > 1 cm s^-1 = 106-2 ms^-1 density 1 gm cm^-3 since 1 gm = 10^-3 kg & 1 cm = 10^-2 m 1 gm cm^-3 = 10^-3 middot 10^6 kg m^-3 = 10^3 kg m^-3 Dynamic viscosity 1 paisa = 1 gm cm^-1 s^-1 = 10^3 times 10^-2 kg m^-1 s^-1 = 10^-1 kg m^-1 s^-1 kinematic viscosity 1 cm^2 s^-1 = (10^-2)^2 m^2 s^-1 = 10^-4 m^2 s^-1 Pressure 1 dyne cm^-2 = 10^-5 middot 10^4 Pa = 10^-1 Pa Energy 1 erg = 1 dyne cm = 10^-5 times 10^-2 J = 10^-7 J Force 1 dyne = 1 gm cm s^-2 = 10^-2 middot 10^-2 kg ms^-2 = 10^-5 N surface tension 1 dyne cm^-1 = 10^-5 middot 10^2 = 10^-3 Nm^-1 Reverse table