Umxholo
Kwi-physics ibizwa ngokubaumsebenzi oomatshini apho ikhulisa amandla ento, ikwazi ukuchaphazela indawo ebikuyo okanye isixa sayo sokuhamba. Umsebenzi womatshini sisixa samandla esifunekayo ukuseta into eshukumayo, eyahlukileyo kwiimpawu zokuhamba, okanye nokuba kukumisa.
Njengazo zonke iintlobo zomsebenzi, zihlala zimelwe ngoonobumba u-W (osuka esiNgesiniUmsebenzi) kwaye iqhele ukulinganiswa kwiijoules, iyunithi yokulinganisa amandla. Ijoule enye ilingana nomsebenzi owenziwe liqela elinyani leNewton kumzimba ohambisa imitha enye kwicala kunye nomkhombandlela wamandla okuqala.
Nangona ukunyanzeliswa kunye nokufuduka kungobuninzi bevector, banikwe ingqiqo kunye nolwalathiso, umsebenzi ubungakanani be-scalar, awunasikhokelo okanye ingqondo (njengale nto siyibiza ngokuba "ngamandla").
Xa amandla asetyenziswa emzimbeni enesalathiso esifanayo kunye nengqondo njengokufuduka kwawo, umsebenzi kuthiwa ulungile. Ngokuchasene noko, ukuba amandla asetyenziswa kwicala elichaseneyo kwindlela yokufuduka, umsebenzi ubizwa ngokuba mibi.
Umsebenzi womatshini unokubalwa ngokomgaqo:
UW(sebenza kwiijoules)= F(nyanzela inewtons). d(umgama kwiimitha).
- Bona kwakho: Umgaqo wesenzo kunye nokuphendula
Imizekelo yomsebenzi woomatshini
- Itafile iyatyhalwa ukusuka kwelinye icala ukuya kwelinye.
- Batsala ikhuba iinkomo kumhlaba wesintu.
- Ifestile eslayidayo iyavula ngamandla angapheliyo ukuya kumda kaloliwe wayo.
- Imoto iyatyhalwa iphelile igesi.
- Ibhayisikile iluncedo ngaphandle kokukhwela kuyo ukuze uhambise.
- Kutsalwa ucangoukungena kwindawo.
- Isithuthi esinye sitsalwa ngenye okanye nge-crane eyitsalayo kwaye iyimise.
- Kukhasa umntuiingalo okanye iinyawo.
- Ipiyano inyuka emoyeni ngenkqubo yeentsontelo kunye neepleyi.
- Ibhakethi liphakanyisiwe ezaliswe ngamanzi avela ezantsi equleni.
- Iqokelelwe emhlabeniibhokisi egcwele iincwadi.
- Imithwalo iyatsalwa kaloliwe, ngokutsala ngaphambili.
- Kudilika udonga ngepiki enamandla okanye iloli.
- Itsala intambokwaye kwelinye icala kukho abanye abantu abamtsalayo (cinchado).
- Ukubetha kuphumelele Ukoyisa amandla okuchasa umdlali welinye icala.
- Ubunzima buphakanyisiwe umhlabaNjengabadlali beOlimpiki.
- Inqwelo itsalwa ngamahashe, njengalezo zazisetyenziswa ngaphambili.
- Iphenyane lemoto litsalwa yimoto engaphandle, eyenza ukuba iqhubeke emanzini.
Imizekelo yokuziqhelanisa nomsebenzi womatshini
- Umzimba we-198 kg wehlisiwe kwithambeka, uhamba iimitha ezili-10. Uyintoni umsebenzi owenziwe ngumzimba?
IsigqiboUkusukela ukuba ubunzima ngamandla, ifomula yomsebenzi womatshini iyasetyenziswa kwaye kufunyenwe ukuba: W = 198 Kg. 10 m = 1980 J
- Uza kufuna malini umzimba X ukuhamba iimitha ezi-3 usenza iijoule zomsebenzi ezingama-24?
Isigqibo: Njengoko W = F. d, sinayo: 24 J = F. 3m
ke: 24J / 3m = F
y = F = 8N
- Yimalini umsebenzi oza kuyibangela ukuba umntu atyhale ibhokisi yentsimbi ngeemitha ezi-2, esebenzisa amandla ka-50 N?
Isigqibo: W = 50 N. 2m, emva koko: W = 100 J
- Qhubeka ngo: Oomatshini abalula
