Isayensi

Ukuqonda Ibanga
Ibanga ubude bendlela ehanjwa yinto. Ibanga liyinani elilinganiselwe, inani elibonakalayo elinobukhulu kuphela futhi elingenalo isiqondiso. Iyunithi yamazwe ngamazwe yebanga yimitha, efingqiwe ngokuthi m. Uphawu lwebanga ngu-s.

Incazelo Yokufuduka
Ukususwa esikhundleni ukushintsha kwesimo sento. Ukususwa esikhundleni kuyinani le-vector, inani elibonakalayo elinobukhulu kanye nesiqondiso. Isiqondiso sokususwa singavezwa njengesiqondiso esiyinhloko (enyakatho, empumalanga, eningizimu, entshonalanga, njll.) noma kusetshenziswa amagama athi kwesobunxele, kwesokudla, phezulu, noma phansi.

Funda kabanzi

Umthetho wokulondolozwa komfutho we-angular wathi uma umzuzu wamandla ophumela entweni eqinile ejikelezayo inani lingu-zero bese kuba umfutho we-angular Into eqinile ekunyakazeni okujikelezayo njalo. Ifomula yomthetho wokulondolozwa komfutho we-angular ingatholakala ngokwezibalo ngokushintsha ifomula yomthetho wesibili kaNewton wokunyakaza komfutho we-angular.

Funda kabanzi

Uma kukhona amandla avelayo entweni enesisindo u-m, khona-ke into ihamba ngendlela eqondile ngokusheshisa u-a. Ubudlelwano phakathi kwamandla avelayo, isisindo kanye nokusheshisa buvezwa ngesibalo:

Lesi yisibalo somthetho wesibili kaNewton owafundwa ekilasini X.

Inani elibonakalayo ekunyakazeni okujikelezayo elifana namandla aphumayo ekunyakazeni okuqondile liwumzuzu wamandla ophumelayo . Inani elibonakalayo ekunyakazeni okujikelezayo elifana nobunzima ekunyakazeni okuqondile liwumzuzu wokungakhathali . Inani elibonakalayo ekunyakazeni okujikelezayo elifana nokusheshisa ekunyakazeni okuqondile yi -angular acceleration.

Funda kabanzi

1. Isitayela sokulondoloza
Uma umsebenzi owenziwa ngamandla lapho into iqala ukuhamba isuka endaweni yayo yokuqala kuze kube yilapho into ibuyela endaweni yayo yokuqala ilingana no-zero, khona-ke amandla abizwa ngokuthi amandla alondolozayo.
Nazi ezinye izibonelo zezitayela ezilondolozayo.

1.1. Amandla adonsela phansi
Cabanga ngento ehamba iqonde phezulu ize ifinyelele ukuphakama okuphezulu bese ihambela phansi iye endaweni yayo yokuqala. Njengoba ihamba iqonde phezulu ibanga elingu-h, amandla adonsela phansi asendleleni ephambene nokufuduka kwento. Ngenxa yokuthi isendleleni ephambene nokufuduka kwento, amandla adonsela phansi enza umsebenzi ongemuhle entweni.
W = wh cos (180^o) = – wh = – mgh

Funda kabanzi

Ukungqubuzana okuqinile amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zingashukumi.

Funda kabanzi

Ukungqubuzana kwe-kinetic amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zihamba.
Uma ufuna ukuthola amandla okungqubuzana okungaguquki, sebenzisa isibalo 1.5 a. Uma ufuna ukuthola i-kinetic friction coefficient, sebenzisa isibalo 1.5 b.

Funda kabanzi

Izinto Zamandla E-Kinetic Ekuhambeni Okujikelezayo

Izinto ezihamba emgqeni oqondile zine amandla e-kinetic okungabalwa kusetshenziswa ifomula:
EK = ½ mv²
Imininingwane:
EK = amandla e-kinetic (amayunithi aphesheya angama-kg m²/s² noma uJoule)
m = isisindo (iyunithi yamazwe ngamazwe ingamakhilogramu, ifinyeziwe ingamakhilogramu)
v = isivinini (iyunithi yamazwe ngamazwe imitha/isekhondi, efingqiwe m/s)
Inani elibonakalayo ekunyakazeni kokujikeleza lifana ne- isisindo (m) kuqhubeke ukunyakaza okuqondile kuyinto umzuzu wokungakhathali (I)Inani elibonakalayo ekunyakazeni kokujikeleza lifana ne- isivinini (v) ekujikelezeni kokujikeleza kuyinto ijubane le-angularNgakho-ke, into ejikelezayo inamandla e-kinetic angabalwa kusetshenziswa ifomula:

Funda kabanzi

Izinto Zokusebenza Zamandla E-Kinetic kanye Nefiziksi

Uma amandla e-net esebenza entweni, into ithola ukusheshisa (kanye nokufuduka). Uma into ithola ukusheshisa, ijubane layo liyashintsha. Kungashiwo ukuthi umsebenzi owenziwa amandla e-net uhlobene nesivinini sokuqala nesokugcina sento.
Umsebenzi owenziwe entweni ngamandla aphelele angaguquki:
Umzamo ophelele (W) = Amandla aphumelayo (F iyonke) x ukufuduka (s)
UMthetho Wesibili kaNewton uthi uma kukhona amandla aphelele asebenza entweni, into izobona ukusheshisa.

Funda kabanzi

Izibonelo Eziyi-9 Zemibuzo Yebhizinisi

1. Amandla angama-Newton angu-20 asetshenziswa ebhulokini kuze kube yilapho ibhulokhi lihamba ibanga elingamamitha amabili. Umsebenzi owenziwa amandla u-F ebhulokini…
Ingxoxo
I-Diketahui :
Amandla (F) = 20 N
Ukufuduka (ama) = amamitha ama-2
I-Angle = 0 (isiqondiso samandla sifana nesiqondiso sokufuduka noma isiqondiso samandla sihambisana nesiqondiso sokufuduka ukuze i-engeli eyakhiwe amandla kanye nokufuduka kube yi-zero)

Funda kabanzi

Isimo sokuqala sokulingana komzimba oqinile :
Umthetho Wesibili kaNewton uthi uma amandla avelayo asebenza entweni (into ibhekwa njengenhlayiya) engalingani no-zero, khona-ke into izohamba ngokusheshisa okuqhubekayo lapho isiqondiso sokunyakaza kwento sifana nesiqondiso samandla avelayo. Uma amandla avelayo engu-zero, khona-ke into iphumule noma into ihamba ngesivinini esingaguquki.

Funda kabanzi