Ikeray, it looks to me that you're being led astray by three different things:
- Wikis are democratic. They are by the people, for the people. There is no professional or academic peer review requirement.
- Don't mix units from differing measurement systems. When dealing with common units, use those units exclusively. Sprinkling SI units into the discussion just leads to headaches. Do any conversions after a final result is reached.
- Don't forget that the unit "pound" means more than one thing. "Pound weight" and "pound force" are not necessarily interchangeable but sometimes are, depending upon the circumstances. In this circumstance, we're dealing with pounds FORCE, not pounds WEIGHT.
I'm looking at my CRC
Handbook of Chemistry and Physics, 75th Edition at the moment. It clearly demonstrates the difference between lb/ft (kg/m in SI) and lbf*ft (Newton meter in SI). So does my
Perry's Chemical Engineer's Handbood.