-Delile
Ku-physics ibizwa kanjaloumsebenzi wokukhanda eba namandla ento, ikwazi ukuthinta ukuma kwayo noma inani lokuhamba kwayo. Umsebenzi womshini inani lamandla adingekayo ukusetha into inyakaze, ihlukahluka ngokushintshwa kokushintshwa, noma ukumise.
Njengezinye izinhlobo zomzimba, kuvame ukumelwa uhlamvu W (olusuka esiNgisiniSebenza) futhi kukalwa ngokujwayelekile kuma-joules, iyunithi yokukala amandla. I-joule eyodwa ilingana nomsebenzi owenziwe ngamandla we-1 Newton emzimbeni ohambisa imitha eli-1 esiqondisweni nasekuqondisweni kwamandla okuqala.
Yize ukuphoqelelwa kanye nokususwa kwenye indawo kungobuningi bevektha, okunikezwe ukuqonda nokuqondisa, umsebenzi uyinani lesikali, awunasiqondiso noma umuzwa (njengalokho esikubiza ngokuthi “amandla”).
Lapho amandla asetshenziswe emzimbeni enesiqondiso nomqondo ofanayo nokuhamba kwawo, umsebenzi kuthiwa muhle. Ngokuphambene nalokho, uma amandla esetshenziswa ohlangothini oluhlukile endleleni yokuhamba, umsebenzi ubizwa ngokuthi unegethivu.
Umsebenzi womshini ungabalwa ngokuya ngefomula:
UW(sebenza kuma-joules)= F(force in newtons). d(ibanga ngamamitha).
- Bheka futhi: Umgomo wesenzo nokuphendula
Izibonelo zomsebenzi womshini
- Itafula liyadudulwa kusukela komunye umkhawulo wekamelo ukuya kolunye.
- Badonsa igeja izinkabi emkhakheni wendabuko.
- Kuvuleka iwindi ngamandla angapheli kuze kube semkhawulweni wesitimela sayo.
- Kududulwa imoto isiphelile igesi.
- Ibhayisikili liyasiza ngaphandle kokukhuphuka kulo ukuze unyobe.
- Kudonswa umnyangoukungena emagcekeni.
- Enye imoto idonswa ngenye noma nge-crane eyidonsayo futhi iyishukumise.
- Kukhasa umuntuizingalo noma izinyawo.
- Upiyano lukhuphuka emoyeni ngohlelo lwezintambo nama-pulleys.
- Kuphakanyiswa ibhakede igcwaliswe ngamanzi avela phansi komthombo.
- Kuqoqwa emhlabathiniibhokisi eligcwele izincwadi.
- Kudonswa impahla wesitimela, ngokudonsela esitimeleni phambili.
- Kudilizwa udonga ngeveni enamandla noma iloli.
- Idonsa intambofuthi ngakolunye uhlangothi kunabanye abantu abamdonsayo (cinchado).
- Ukushaya kwenhliziyo kuyanqotshwa ukunqoba amandla onikezwa umphikisi kolunye uhlangothi.
- Isisindo siyaphakanyiswa umhlabathi, njengoba kwenza abasubathi bama-Olympic.
- Inqola idonswa ngamahhashi, njengalezo ezazisetshenziswa esikhathini esedlule.
- Isikebhe semoto sidonswa yimoto engaphandle, okwenza iqhubekele phambili emanzini.
Izibonelo zokuvivinya umzimba ngomshini
- Umzimba ongu-198 kg wehliswa emthambekeni, uhamba amamitha ayi-10. Uyini umsebenzi owenziwa ngumzimba?
Isixazululo: Njengoba isisindo singamandla, ifomula yomsebenzi womshini iyasetshenziswa futhi kutholakala ukuthi: W = 198 Kg. 10 m = 1980 J
- Umzimba X uzodinga amandla angakanani ukuhamba amamitha ama-3 wenza ama-joule of 24?
Isixazululo: Njengoba W = F. d, sinakho: 24 J = F. 3m
ngakho-ke: 24J / 3m = F
y: F = 8N
- Kuzobiza malini umsebenzi womuntu ukuphusha ibhokisi lensimbi ngamamitha ama-2, ukusebenzisa amandla ka-50 N?
Isixazululo: W = 50 N. 2m, bese: W = 100 J
- Qhubeka: Imishini elula
