Imiyalelo Yokuhlola Ukungqubuzana Okungaguquki Nokunamathela Kwe-Kinetic
Isihloko sokuhlola: Ukungqubuzana okuqinile kanye nokungqubuzana kwe-kinetic
Izinhloso zokuhlola:
- Ukwazi amandla okungqubuzana angaguquki
- Ukwazi amandla okungqubuzana kwe-kinetic
Amathuluzi nezinto zokwakha: I-Dynamometer, umsebe encane.
Imfundiso eyisisekelo:
Amandla Okungqubuzana
Ukungqubuzana kungamandla okumelana asebenza phakathi kobuso bezinto ezithintanayo. Kulesi sihloko, ukungqubuzana okufundwe kuhlobene namandla okungqubuzana asebenza phakathi kobuso obubili obuqinile obuthintanayo.
Amandla okungqubuzana entweni ehambayo ahlala ephambene nokuqondisa kokunyakaza kwento.
Kunezinhlobo ezimbili zokungqubuzana: ukungqubuzana okungaguquki (fs ) kanye nokungqubuzana kwe-kinetic (f k ). Ukungqubuzana okungaguquki kusebenza lapho into isahamba, kanti ukungqubuzana kwe-kinetic kusebenza lapho into ihamba. Uma ucindezela itafula kodwa lisahamba, amandla okungqubuzana asebenza etafuleni elingaguquki yi-static friction. Ngokuphambene nalokho, lapho itafula lihamba, amandla okungqubuzana asebenza etafuleni yi-kinetic friction.
Amandla Okungqubuzana Okungaguquki
Ukungqubuzana okuqinile amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zingashukumi.
fs = μ s N
UMthetho Wokuqala KaNewton uthi into iphumule uma amandla aphelele (amandla aphumelayo) elingana no-zero.
ΣF x = 0
F – f s = 0
F = fs
Uma into isizohamba (into isamile), amandla aphezulu okungqubuzana anganyakazi afana namandla okusunduza noma okudonsa.
Amandla Okungqubuzana Kwe-Kinetic
Ukungqubuzana kwe-kinetic amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zihamba.
f k = μ k N
UMthetho Wokuqala KaNewton uthi into ihamba ngesivinini esingaguquki uma amandla aphelele (amandla aphumelayo) elingana no-zero.
F – f k = 0
F = f k
Uma into ihamba ngesivinini esingaguquki, ubukhulu bamandla okungqubuzana kwe-kinetic bufana nobukhulu bamandla okusunduza noma okudonsa.
Izinyathelo zokuhlola:
1. Beka ibhloko endaweni eyisicaba.
2. Xhuma i-dynamometer ebhulokini
3. Donsa i-dynamometer kuze kube yilapho ibhloko selizohamba.
4. Funda ubukhulu bamandla aboniswe yi-dynamometer, uyiqophe kukholomu yamandla okungqubuzana okungaguquki.
5. Donsa i-dynamometer kuze kube yilapho ibhloko lihamba ngesivinini esingaguquki.
6. Funda ubukhulu bamandla aboniswe yi-dynamometer, uyibhale kukholomu yamandla okungqubuzana kwe-kinetic.
7. Phinda lokhu kuhlola izikhathi ezintathu
Ukuhlaziywa Kwedatha Nedatha:
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Cha
Amandla okungqubuzana aqinile ( fs )
Amandla okungqubuzana kwe-kinetic (f k )
1
2
3
I-Rata-rata
Phendula imibuzo elandelayo:
Yikuphi okukhulu, ukungqubuzana okungaguquki noma ukungqubuzana kwe-kinetic? Kungani?
Isiphetho
Yisho isiphetho sakho.
