Kanjani ukubala inani

Noma yini esaluketshezi sinezici. Futhi izici eyinhloko iyiphi into - isisindo, - noma kunalokho, amandla adonsela phansi ethize, isilinganiso nesisindo umzimba ethile futhi ivolumu elalihlala walo mzimba. Lesi sibalo imiphumela ezivela ekuzimiseleni mechanical ndaba. Ngalo senza hambisa izincazelo emkhakheni izinga. Matter ayisekho i mass amorphous, elusa isikhungo salo gravity kithi. Awu, isibonelo - isimiso sethu sikanozungezilanga - konke umzimba wakhe zihlukile gravity ethize (mayelana nendlela ukubala Ingxenye - ngezansi nje), njengoba isisindo sayo kanye umthamo yayo. Uma sithatha ngaphandle Earth wethu kanye igobolondo layo (lithosphere, hydrosphere, umkhathi), kuvela ukuthi banayo isisindo ethize, ezahlukene futhi ngabanye.

Ngokufanayo, ngamunye izakhi zamakhemikhali babe isisindo sabo, kuphela ukuba athomu. Kuyinto futhi ukubonakaliswa yesisindo ethize. Phela, kukhona kuphela izakhi ezimbalwa ezingase khona ifomu okumsulwa, kodwa konke -connection enye ngokuvamile ezinzile futhi njengoba izinto ezilula ezaziwayo. I lithosphere kuyiplanethi yethu abangaphezu kwamakhulu amahlanu, ngamunye - nezakhe isisindo saso esikhethekile. Kanjani ukubala inani? Futhi ngokuvamile, kungase kwenziwe?

Yiqiniso. Manje cabangela indlela ukubala amandla adonsela phansi ethize. Kungcono ukukwenza ngezibonelo ukhonkolo ukuze kube sobala.

1. Isibonelo, - inhloko esitolo Woodworking futhi bafuna ukwazi ukuthi ukubala inani ukuthengiswa kwezimpahla ezithile noma ukusebenza impahla kuleli cala. Kumele eyaziwa: ukubaluleka yokuthengisa umkhiqizo othize, futhi umthamo isamba. Ake sithi ube: umkhiqizo - ibhodi ngenzuzo - 15500 (RUB), isilinganiso - 81,6%; umkhiqizo - ugodo ngenzuzo - 30000 (RUB), inani lemikhaya 15.8% ngesilinganiso; umkhiqizo - setshe, imali - 190000 (RUB), inani lemikhaya 2.6%. Ubude: Imbuyiselo - 190000, nesibalo (kwabiwa), ngokulandelana, 100%. Kanjani ukubala inani ebhodini? Hlukanisa 155000 ukuze 190000, nande ekhubazekile. Sithola 81,6%. Ukuthi lokhu gravity ethize ebhodini.

2. Indlela ukubala inani iyiphi into?

I share okucabanga ngokuvamile kudidaniswe ukuminyana, nakuba imiqondo bahluke ngokuphelele. amandla adonsela phansi ethize asisebenzi nezici zabo ezingokomzimba futhi amakhemikhali, futhi ihluke kanjani kwabantu, bathi, isisindo isisindo.

. 2.1) Ubuningi - isilinganiso mass ivolumu kanye nesisindo ethize - isisindo yesiminyaminya isilinganiso, kule formula singatlolwa bunjesi: γ = mg / V Futhi uma konga isilinganiso nesisindo predetermined yenqwaba umzimba, ifomula okuthola isisindo ethize, ngokulandelana, ungalotshwa leli fomu: γ = ρg.

2.2.) Uma wayefisa, amandla adonsela phansi ethize zingatholakala ngokusebenzisa ngobuningi kanye nesisindo, noma indlela yokulinga, ngokuqhathanisa amagugu ingcindezi. Lapha, ngokuhamba ngeke kwesibalo hydrostatic: P = Po + γh. Kodwa le ndlela kusebenza kuphela endabeni uma wazi wonke, ngaphandle kokukhetha, amagugu elinganisiwe. Kulokhu, inani ekutholeni ifomula ozuza ifomu elilandelayo: γ = P-Po / h. I kwesibalo ngokuvamile lisetshenziselwa ukuchaza izitsha yokuxhumana futhi izenzo zabo. Ngesisekelo idatha zokuhlola uphetha ngokufanele izidakamizwa ngalinye imikhumbi yokuxhumana, kuyodingeka ukuphakama ayo futhi ulinganisele ayo wokusakaza ngasezindongeni bomkhumbi lapho le ketshezi kuyinto.

2.3.) Ukuze abale (ukubala) abanesibalo, ungafaka isicelo esinye ifomula (Archimedes amandla). Khumbula izifundo esikoleni physics? Mhlawumbe ngoyebo impendulo amayunithi kuphela. Ngakho-ke, thina uvuselele inkumbulo: i-Archimedes amandla silyl buoyancy. Lokucabanga umthwalo inikezwe kokuba isisindo ezithile (lokhu isisindo luchazwa ngokuthi "m"), ukubamba amanzi. Kuleli qophelo, umthwalo kuthinte amabutho amabili, owokuqala - amandla adonsela phansi, kanti eyesibili - Archimedes (buoyancy amandla, futhi isiqondiso Vector kuyoba mg inversely). Esikhathini ifomula, amandla ka-Archimedes libukeka kanje: Fapx = ρgV. Ukwazi ukuthi isisindo ethize elilingana ρg uketshezi, sithola ezothando ezilandelayo: Fapx = yV, futhi lisenza siphethe ngokuthini: y = Fapx / V

Iyinkimbinkimbi? Sabe lula: ukuze ukubala inani Hlukanisa isisindo ngu ivolumu.