Wadatacce
A kimiyyar lissafi ana kirantaaikin injiniya wanda ke haɓaka ƙarfi akan abu, yana iya rinjayar matsayinsa ko adadin motsi. Aikin injiniya shine adadin kuzarin da ake buƙata don saita abu cikin motsi, bambanta halayen ƙaurawar da aka ce, ko ma dakatar da shi.
Kamar sauran nau'ikan aikin jiki, galibi yana wakiltar harafin W (daga IngilishiAiki) kuma galibi ana auna shi a joules, naúrar don auna makamashi. Joule ɗaya yayi daidai da aikin da Newton Force 1 yayi akan jikin da ke motsa mita 1 a cikin shugabanci da ikon ƙarfin farko.
Kodayake ƙarfi da ƙaura suna da girman vector, an ba su hankali da jagora, aiki ƙima ne, ba shi da alkibla ko ma'ana (kamar abin da muke kira "makamashi").
Lokacin da ƙarfin da aka yi amfani da shi ga jiki yana da alkibla da ma'ana iri ɗaya kamar ƙaurarsa, aikin an ce yana da kyau. A akasin wannan, idan an yi amfani da ƙarfin a kishiyar hanyar zuwa ƙaura, ana kiran aikin mara kyau.
Ana iya lissafin aikin injiniya gwargwadon tsari:
W(aiki a jumloli)= F(karfi a newtons). d(nisa a mita).
- Dubi kuma: Ka'idar aiki da amsawa
Misalan aikin injiniya
- Ana tura teburi daga wannan kusurwar dakin zuwa wancan.
- Suna jan garma shanu a fagen gargajiya.
- Ana buɗe taga mai zamewa tare da ƙarfi da ƙarfi har zuwa iyakar layin dogo.
- Ana tura mota wanda ya kare da iskar gas.
- Keke yana da amfani ba tare da hawa kan shi zuwa feda ba.
- Ana ja kofadon shiga harabar.
- An ja motar da wani ko kuma da karfen da ya ja shi ya motsa shi.
- Jijjiga wanina makamai ko ƙafa.
- Piano yana tashi ta cikin iska tare da tsarin igiyoyi da abubuwan hawa.
- An taso guga cike da ruwa daga kasan rijiya.
- An tattara daga ƙasaakwati cike da littattafai.
- Ana jan kayan na jirgin kasa, ta locomotive na jan gaba.
- An rushe bango tare da babbar motar daukar kaya ko babbar mota.
- Yana jan igiyakuma a daya karshen akwai wasu mutane suna jan ta (cinchado).
- An lashe bugun jini shawo kan karfin da abokin hamayyarsa ke yi a sabanin haka.
- Ana ɗaga nauyi ƙasa, kamar yadda 'yan wasan Olympic ke yi.
- Dawakai ke jan karusa, kamar waɗanda aka yi amfani da su a baya.
- Ana jan kwale -kwalen babur ta hanyar waje, wanda ke sa ya ci gaba a kan ruwa.
Misalan darussan aikin injiniya
- An saukar da jiki mai nauyin kilo 198 zuwa gangara, yana tafiya mita 10. Menene aikin da jiki ke yi?
Ƙuduri: Tun da nauyi nauyi ne, ana amfani da dabarar aikin injiniya kuma ana samun cewa: W = 198 Kg. 10 m = 1980 J
- Nawa ne ƙarfin jikin X zai buƙaci tafiya mita 3 yana yin joules 24 na aiki?
Ƙuduri: Kamar yadda W = F. d, muna da: 24 J = F. 3m
saboda haka: 24J / 3m = F
y: F = 8N
- Yaya aikin zai kasance ga mutum ya tura akwatin ƙarfe ta mita 2, yana amfani da ƙarfin 50 N?
Ƙuduri: W = 50 N. 2m, sannan: W = 100 J
- Ci gaba da: Inji mai sauƙi
