Clearing Up Units Confusion: How to Ensure Consistency for Density and Rotation

[svishal03]

Please can anyone help me?I'm confused here.

If I'm following unit of force as Newton, and length as mm; and stress as MPa,then for a consistent system of units (see link below);

http://www.dynasupport.com/howtos/general/consistent-units/

what should be the unit for:
1)density
2) rotation

 

[jedishrfu]

for me I would convert everything to MKS and then work it out rather than mix and match various units of measure unless there is a clear reason to do otherwise. Similarly for choosing CGS...