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 ann December 10, 2002 00:15

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.

 MissNancy December 10, 2002 04:05

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

 phil December 10, 2002 06:20

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

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

 Atholl December 10, 2002 06:28