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1 kg = 2.204623 lbm (that's pounds mass)
1800 lbm / (2.204623 lbm / kg) = 816.4661 kg
m = mass = ( 140 lbm ) ( 1 kg / 2.2046 lbm ) = 63.5 kg <--------------
there are 2000 lbm in 1 ton (T). there are 2000 lbm in 1 ton (T).
LBM means Loose Bowel Movement which is another term for Diarrhea.
explaine the process of LBM and PAM with a neat sketches