Amandla: Yintoni ilinganiswa isetyenziswa, ifomula ukubala

Yintoni na amandla kunye namandla? Oko umlinganiselo, esebenzisa zeziphi izixhobo nendlela ekhankanywe amaxabiso emzimbeni zifakwa yokusebenza, siza kujonga kamva kweli nqaku.

amandla

Ihlabathi ke indlela ebonakalayo umzimba uqale ukususa ngamandla. Xa ukusebenza kwayo, kunye umzimba ezinxulumene okanye icala bentshukumo, umsebenzi ugqityiwe. Ngenxa yoko, umzimba ichaphazela nawaphi na amandla okusebenza.

Ngoko ke, lo ibhayisekile uqala ezihamba emlenzeni amandla oluntu aqeqeshe amandla electric kaloliwe zokutsalwa kwimithwalo. nomphumela ofanayo kwenzeka nayo nayiphi na intshukumo. Ibutho Umsebenzi - lixabiso apho liphindaphindwe mnqongo womlinganiselo ngamandla ukuhambisa yesiqalo sayo isicelo kunye cosine ye-engile phakathi njengezazisi kwezi zalathisi. Ifomula kulo mzekelo lumi ngolu hlobo lulandelayo:

A = F · s · cos (F, s)

Ukuba engile ephakathi ezi zithwala ayikho zero, umsebenzi isoloko eyenziwa. Kule meko kungaba kuzo ebezintle nezo zingentle. On umzimba ayiyi olusebenza kwi-engile ° 90.

Ngokomzekelo inqwelo itsalwa ngamandla zehashe dystrophy. Ngamanye amazwi, lo msebenzi wenza ukuwutyhalela kulo kwicala intshukumo enqwelweni. Kodwa ke amandla womxhuzulane, ezantsi okanye aa Incopho, umsebenzi akuthethi (ngasendleleni, enjini - ilinganiswa ngoko ngamandla injini).

Ibutho msebenzi ubuninzi scalar kwaye ulinganiswa ziijowule. Kungaba:

• nomphumela (xa baboniswa imikhosi ezininzi);
• ingazinzi (ke ubalo wenziwa kokunikeza).

amandla

In nangomlinganiselo eli xabiso? Ukuze uqale ibattery, ukuba limela. Kuyaqondakala ukuba intshukumo yomzimba uqala kungenxa yamandla, wenza umsebenzi ngoomatshini. Noko ke, xa kusenziwa, ukongeza koku, kuyimfuneko ukwazi oko yenziwe ngayo.

Umsebenzi sinokuzaliswa ngamaxesha ahlukeneyo. Umzekelo, isiphumo esifanayo ungenza injini encinane okanye enkulu injini yombane. Umbuzo kuphela, kuya kuveliswa elide kangakanani. Ixabiso elinoxanduva lo msebenzi - amandla kaThixo. Into ilinganiselwa, kucacile kwinkcazelo - lulwahlulo yomsebenzi kangangexesha elithile ukuze ixabiso layo;

N = A / Δt.

Xa imisebenzi ubhalo sifika kule nxaki kulandelayo:

N = F · v,

oko ke imveliso bezifo ukusebenza ngesantya - kwaye linamandla. Yintoni na kulinganiswa? Ngokutsho inkqubo SI, eli xabiso iyunithi yokulinganisa 1 Watt.

Watt kunye nezinye iiyunithi namandla

Watt ngamandla, nto leyo ekuveliseni umsebenzi sesibini a esiyijowule. Owokugqibela igama imbeko an eliNgesi Dzh.Uatta ceba wakha injini yokuqala. Kodwa ukwenza njalo wasebenzisa ixabiso ezahlukeneyo - enjini, yintoni kusetyenziswa unanamhla. Enye Injini yi malunga ulingana 735,5 watts.

Ngoko ke, ukongezelela Watt, amandla ulinganiswa enjini metric. Yaye kakhulu ixabiso elincinane esetyenziswa IsiNdebele, lingana ne ukuya kwishumi thabatha igunya lesixhenxe Watt. Kunokwenzeka kunye neSingqinisiso elinye elichaza ubunzima / amandla / ngomzuzwana, leyo ilingana ukuya 9,81 watts.

amandla injini

ixabiso ogama yenye yezinto ezibalulekileyo kuso nasiphi na isithuthi ukuba umthamo eyahlukileyo. Umzekelo, i-ukucheba nento yombane uba hundredths ezimbalwa a kilowatt, kwaye rocket isiphekepheke ayezizigidi ngezigidi.

Ezingalinganiyo umthwalo zifuna amandla ezahlukeneyo ukuze ugcine isantya ethile. Ngokomzekelo, imoto kuya kuba nzima ukuba ufake impahla ngakumbi. Ngoko ke amandla zochuku endleleni uza kunyuka. Ngoko ke, ukuze agcine isantya elifanayo kwi imeko wazikhulula, oko kufuna kakhulu amandla. Ngako oko, le injini uya kudla amafutha ngakumbi. Le nyaniso kuye kwafika kubo bonke abaqhubi.

Kodwa ngesantya esiphezulu kubalulekile, kwaye inertia kumatshini, apho umlinganiselo ngqo ubunzima bayo. Abaqhubi abanamava bayazi ziphumo nto ngoxa uqhuba udibaniso kakhulu amafutha kunye nesantya kukhathalelo ipetroli ngaphantsi.

amandla yamanje

Yintoni amandla ngoku elilinganisiweyo? Xa iyunithi efanayo inkqubo SI. Oku kungenziwa kulinganiswa indlela ngqo okanye ngokungathanga ngqo.

Indlela lokuqala usebenzisa imitha amandla, odlayo amandla kakhulu kwaye umthombo enzima kakhulu ngoku. Ngayo, kulinganiswa ukusuka watts ezilishumi okanye ngaphezulu. Indlela ngqo isetyenziselwa ukulinganisa amaxabiso ezincinane xa kuyimfuneko. Devices yale le ammeter kunye voltmeter enxulumene kumboleki. Ifomula kulo mzekelo iya kuba ifomu:

P = U · I.

Ngenxa ukuxhathisa eyaziwa umthwalo, ukulinganisa yangoku ayahamba na kuso kwaye ufumane ixabiso amandla ngolu hlobo lulandelayo:

P = I ² ∙ R _n.

Ngokutsho P ifomula = ^I-2 / R _N nazo vycheslit umthamo yangoku.

Oko ilinganiswa kwisigaba emithathu-unikezelo lwamandla, kakhulu, akukho mfihlakalo. Ukuze wenze oku, sebenzisa isixhobo esiqhelekileyo - imitha amandla. Kunye ukusombulula ingxaki ngaphezu Wayilinganisa amandla ombane, unako ukusebenzisa izixhobo omnye, ababini okanye abathathu kude. Umzekelo, ukuba abane-ukufaka i ezifunekayo izixhobo ezintathu. Kuba-wire emithathu kulayishwa azilingani - ezimbini.