I don't know some relationships between the metric system and the American system. In the American system, the unit of weight flow is lb/sec. And in the metric system, the unit of mass flow is kg/s. I don't know whether the dimensions between weight flow and mass flow is same, that is to say,weight flow =mass flow is right or weight flow =mass flow * gravity acceleration is right. And one lb/sec=?kg/s or one lb/sec=?kg/s*gravity acceleration.

Another question: the unit of pressure in the metric system is Pascal and in the American system is lb/sq ft; Then one lb/sq ft=?pascal.

1 kg=2.2046 lb. This means, if you weigh 100 kg, you weigh 220.46 pound !!

1 atmospheric pressure=101396 N/m^2=101396 pascal=14.7 psi =14.7*144 psf

Re mass and weight dilemma, please use the units, reader will know what are you talking about.

Nancy

this website has some useful conversion factors to convert between various units.

http://www.ex.ac.uk/cimt/dictunit/dictunit.htm

Also, go to http://www.joshmadison.com/software/convert/ and download this invaluable piece of software

Atholl

Hi,Nancy Do you mean the mass flow is 220.46 pound/s and the weight flow is 220.46 pound force/s if the mass flow in the metric system is 100kg/s?

Thanks for help!