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 December 10, 2002, 00:15 some simple question,please help #1 ann Guest   Posts: n/a Sponsored Links 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.

 December 10, 2002, 04:05 Re: some simple question,please help #2 MissNancy Guest   Posts: n/a 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

 December 10, 2002, 06:20 Re: some simple question,please help #3 phil Guest   Posts: n/a this website has some useful conversion factors to convert between various units. http://www.ex.ac.uk/cimt/dictunit/dictunit.htm

 December 11, 2002, 02:09 Re: some simple question,please help #5 ann Guest   Posts: n/a 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!

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