Ubunzima ifomula

Kubomi bemihla ngemihla kunye nobomi bemihla ngemihla ingcamango "ubunzima" yaye "ubunzima" ziyafana, nangona ixabiso lwesemantiki bohluke zabo ezahlukeneyo. Zibuza, 'Yintoni le ubunzima wakho? " sithetha uku "Bangaphi kilograms na?". Noko ke, lo mbuzo sizama ukufumana phandle oku, impendulo alinikwa ngeekhilogram, kunye newtons. Kufuneka ubuyele kule khosi physics zesikolo.

ubunzima Umzimba - wobungakanani eziphawula force ngawo umzimba usebenzisa uxinzelelo ngenkxaso okanye ukumiswa.

Thelekisa ubunzima bomzimba ngaphambili kalukhuni lichazwa ngokuthi "inani kwento", inkcazelo mihla ndlela:

Weight - nobungakanani ebonakalayo ebonisa ukukwazi umzimba inertial kwaye omxhuzulane nto leyo umlinganiselo iipropati yayo.

Ingcamango mass ngokubanzi ngokubanzi kancinane thaca apha, ke, umsebenzi wethu kukuba ngandlel 'ithile. Kwanele ukuba ukuqonda ubunyani yomahluko kanye phakathi ubunzima kunye nobunzima.

Ukongeza, iyunithi yomlinganiselo ubunzima - ubunzima, ubunzima (njenge uhlobo amandla) - Newtons.

Kwaye, mhlawumbi okona kubaluleke kakhulu, umahluko ubunzima ukusuka ubunzima iqulethe kukodwa ubunzima ifomula ukuba sijongeka njengoku:

P = mg

apho P - ubunzima ncakasana (e Newtons), m - ubunzima yayo kg, kunye g - ukukhawulezisa womxhuzulane, nto leyo edla kuchazwe ngohlobo 9.8 N / kg.

Ngamanye amazwi, ubunzima formula nga kuqondwe mzekelo ulandelayo:

Weight 1 kg umisiwe dynamometer emileyo, ukuze kuqinisekiswe ukuba ubunzima bayo. Ukususela umzimba, kunye dynamometer ngokwayo, kubafikela abazolileyo, oko ukuba ubunzima bayo liphindaphindwe yokunyusa ukuwa. Thina: 1 (kg) x 9.8 (N / kg) = 9.8 N. Le mandla izenzo kunye ubunzima kwi dynamometer ihenga. Ngoko kucacile ukuba ubunzima umzimba uyalingana umkhosi womxhuzulane. Nangona kunjalo, oku akusoloko kunjalo.

Lifikile ixesha lokuba ukwenza ingongoma ebalulekileyo. Ubunzima ifomyula ilingana umkhosi olungumgubo womxhuzulane kuphela kwezi meko zilandelayo:

• umzimba sikwimo yoxolo;
• kwi umzimba amandla kaArchimedes (ukubagcina). Ulwazi olunomdla malunga ukubagcina: kwakusazeka ukuba umzimba emanzini, lenkosikazi kukho umthamo wamanzi ngokulinganayo ubunzima bayo. Kodwa akukho ugqithayo nje amanzi, umzimba uba "lula" phezu umthamo wamanzi abafudukayo. Kungenxa yoko le nto aphakamisa Mfazi amanzi zalishumi 60 kg ukuba uyadlala kwaye behleka, kodwa phezu kwayo kwenza inzima kakhulu ngakumbi.

Xa intshukumo yomzimba mgaqweni, ngamanye amazwi, xa umzimba kunye ukunqunyanyiswa ihamba kunye ukukhawulezisa a, utshintsha inkangeleko yayo kunye nefomula weight. lo mkhuba of physics utshintshe kancinane, kodwa kwifomula iboniswa ezifana utshintsho ngale ndlela ilandelayo:

P = m (ga).

Njengoko inokususwa ubunzima ifomula inokuba ezimbi, kodwa kukukhawuleziswa apho uhamba emzimbeni, kufuneka libelikulu ukukhawulezisa omxhuzulane. Kwaye naku kwakhona kubalulekile ukwahlula phakathi ubunzima mass: ubunzima ezigxekayo ayichaphazeleki ubunzima (iimpawu zomzimba zihlala zifana), kodwa nalo luye ethunyelwa kwelinye icala.

imizekelo ezilungileyo lift okukhawulezileyo, kunye ukukhawulezisa yayo elibukhali ngexesha elifutshane kubonakala "ukutsala ukusuka eluphahleni." Ekubeni imvakalelo enjalo, Kakade ke, nayo nje ngokwaneleyo. Nzima kakhulu ukuba imeko weightlessness, leyo va ngokupheleleyo oosomajukujuku ukujikeleza.

Weightlessness - enyanisweni, ukunqongophala ubunzima. Ukuze oku kube nokwenzeka, kukukhawuleziswa, awanyakazela ngayo lihamba umzimba, kufuneka ngokulinganayo notorious usoreniyu g (9,8 N / kg). Kukufezekisa isiphumo loo lula Earth orbit eliphantsi. Womxhuzulane, ie umtsalane, sekunjalo wenza emzimbeni (satellite), kodwa ayinamsebenzi. Kwaye ukukhawulezisa aqhele of ukujikeleza kuxhomekeka nayo kuyaphela zero. Kwaye ke kukho isiphumo kukunqongophala ubunzima, ngenxa yokuba umzimba akayi kungena ukudibana kunye nokuba inkxaso okanye ukumiswa, kodwa lundanda emoyeni.

Okunye lo ukusebenza, kufuneka nazo ngexesha ukusuka. Ngokuba yinto yephanyazo kukho yimvakalelo abanqunyanyisiweyo emoyeni kule lunikezelo ngongoma leyo ihambisa moya, kulingana yokunyusa ukuwa.

Ukubuyela kwakhona umahluko ubunzima inginginya, kubalulekile ukukhumbula ukuba ubisi ubunzima umzimba yohlukile ifomula ubunzima, elijongeka:

m = ρ / V,

oko kukuthi, lexinene kwento lahlulwe umthamo wayo.