Ib qho ntawm qhov loj tshaj plaws ntawm kev tsis meej pem hauv Imperial (los yog US Customary) system ntawm kev ntsuas yog tias ob qho tib si loj thiab quab yuam yog ntsuas siv tib lub tsev, phaus. Qhov sib txawv ntawm ob, peb hu ib hom phaus pound-mass (lbm) thiab lwm yam pound-force (lbf).
Puas yog lbf ntsuas qhov loj?
Nyob hauv qee lub ntsiab lus, lo lus " pound " yog siv yuav luag tsuas yog xa mus rau chav tsev ntawm lub zog thiab tsis yog chav tsev loj. Hauv cov ntawv thov no, chav tsev nyiam ntawm pawg yog slug, piv txwv li lbf⋅s2/ft. Hauv lwm cov ntsiab lus, chav tsev "pound" yog hais txog ib chav tsev loj.
lbf sib npaug li cas?
Ib lbf, lossis ib phaus quab yuam, yog lub zog gravitational exerted los ntawm ib qho teeb meem ntawm lub ntiaj teb.… Hauv cov duab nws zoo li no, 1 lbm x 32.174049 ft/s2, los yog sib npaug rau 32.174049 ft. lbm/s2. Yog li yog tias peb hloov nws mus rau "N," lossis Newton, ces nws tsuas yog 1 lbf=0.45359237 kg x 9.80665m / s2=4.4482216152605 N.
Qhov txawv ntawm LBM thiab lbf yog dab tsi?
Qhov txawv ntawm LBF thiab LBM yog dab tsi? LBM yog siv los ntsuas qhov hnyav , whereas LBF yog siv los ntsuas lub zog. Txawm li cas los xij, LBF tau txhais rau lub zog gravitational nws tuaj yeem siv los ntsuas txhua lub zog. Qhov loj ntawm LBM yog qhov loj, qhov ntev ntawm LBF yog qhov lojntev / sijhawm 2
Puas KG hnyav lossis hnyav?
Kilogram (kg), basic unit of mass in the metric system. Ib kilogram yog ze li ntawm sib npaug (nws yog Ameslikas xav kom sib npaug) rau qhov loj ntawm 1,000 cubic cm dej. Cov phaus txhais tau tias sib npaug rau 0.45359237 kg, raws nraim.
