Question

Using dimensional analysis find the relation between SI and CGS unit of pressure.​

Answer 1

Answer:

As we know, Pressure = Force/Area

Now coming to the SI unit of Force, we know that it is Newton, N.

And N=Kgm/s2

the cgs unit of Force is Dyne, dyn.

And 1 dyn=1g−cm/s2=10−5N

SI unit of Pressure is Pascal, Pa.

And 1Pa=1N/m2

where as in cgs units it is barye, Ba.

And 1Ba=1dyn/cm2=(10−5)N/(10−2m)2=10−5/10−4N/m2=0.1N/m2=0.1Pa

So, 1Ba=0.1Pa .