3 Mienzaniso yemibvunzo yekufamba yakamira kumusoro
1. Bhora rinokandwa rakamira kumusoro nekumhanya kwekutanga kwe20 m/s. Sarudza kukwirira kwakanyanya kwebhora. g = 10 m/s2
Kukurukurirana
Mukufamba kwakamira kumusoro, kana chinhu chikakwira kumusoro, chinodzika, uye kana chikadzika pasi, chinokurumidza. Saka, kufamba kwakamira kumusoro zvakare muenzaniso weGLBB.
Fomura yeGLBB :
vt =vo + pa
s = vo t + ½ pa2
vt2 =vo2 + maekisero maviri
3 Mienzaniso yemibvunzo yekufamba yakatwasuka ichidzika pasi
1. Bhora rinokandirwa pasi rakamira kubva pachivako chine nhurikidzwa dzakawanda rine kumhanya kwekutanga kwe10 m/s uye rinosvika pasi mushure memasekonzi maviri. Kumhanya kwebhora kunorevei kana rarova pasi? g = 10 m/s2
Kukurukurirana
Zvinozivikanwa kuti:
vo = 10 m/s
t = masekondi maviri
g = 10 m/s2
Akabvunzwa:
Mienzaniso gumi nematanhatu yeMibvunzo yeKufamba Kwemahara Kwemwaka weMatsutso.
1. Muchero wekokonati unobuda padzinde wosvika pasi mushure memasekonzi matatu. Kokonati inomhanyisa sei kana yasvika pasi? g = 10 m/s2
Kukurukurirana
Zvinozivikanwa :
t = masekondi maviri
g = 10 m/s2
Akabvunzwa :
4 Mienzaniso yehuwandu hwakatorwa, chiyero chepasi rose uye mafomura eyuniti
| Huwandu hwakatorwa | Fomura | Mari huru inoumbwa nei? | Zviyero zvehuwandu hwakatorwa | Huwandu hweZvikamu zveNyika Dzese Hwakawanikwa |
| mwedzi | Kureba x upamhi | Kureba (2) | [L2] | m2 |
| Vhoriyamu ye cuboid | Kureba x upamhi x kukwirira | Kureba (3) | [L3] | m3 |
| Kuwanda kwevanhu | Huremu / Vhoriyamu | Huremu (1), kureba (3) | [M] / [L]3] = [M][L-3] | Makirogiramu / m3 |
| Kecepatan | Kureba / nguva | Hurefu (1), nguva (1) | [L] / [T] = [L] [T]-1] | m / s |
| Kukurumidzisa | Kumhanya / nguva | Hurefu (1), nguva (2) | [L] [T]-1] / [T] = [L] [T]-2] | m / s2 |
| Gaya | Kukwidza kwehuremu x | Huremu (1), kureba (1), nguva (2) | [M][L][T]-2] | Kg m/s2 |
| Bhizinesi | Simba x kusuduruka | Huremu (1), kureba (2), nguva (2) | [M][L][T]-2][L] = [M][L2][T-2] | kg m2/s2 |
Kuti uwane huwandu hwehuwandu hwekutanga, tanga watora fomura yehuwandu hwakawanikwa.
Mirayiridzo yekuyedza mutemo yaArchimedes
Chinangwa chekuedza kwemutemo kwaArchimedes:
- Vadzidzi vanogona kuyera huwandu nehuremu hwemvura yakabviswa nechinhu chakanyudzwa mumvura.
- Vadzidzi vanogona kuziva nekunzwisisa mutemo waArchimedes
Zvishandiso nezvinhu:
– Mudziyo wepakati nepakati (1)
– Kadhi diki (1)
– Dynamometer (1)
– Rodha (1)
Mienzaniso mitanhatu yemibvunzo yemutemo yaArchimedes
1. Ivhu rakadii rinoiswa mumvura yegungwa kana huremu hwemvura yegungwa yakabviswa nedombo iri maNewton maviri? Kuwanda kwemvura yegungwa = 1025 kg/m3.
Kukurukurirana
Mienzaniso mishanu yemibvunzo yekuyangarara
1. Huremu hwemutoro uri mumhepo i3 N, huremu hwemutoro uri mumvura i2,8 N. Mvura inoshandisa simba rakadii pamutoro?
Kukurukurirana:
Kunzwisisa Mutemo waPascal
Jeki/lift ye hydraulic inoshanda sei kana ichishandiswa kusimudza mota? Mabhureki e hydraulic anoshanda sei kana ichishandiswa kunonotsa mota?
Sezvatakadzidza munyaya yeFluid Pressure , mvura yega yega inomanikidza zvinhu zvese zvainosangana nazvo. Mvura yatinoisa mugirazi inomanikidza madziro egirazi. Saizvozvowo, patinogeza mudziva rekushambira kana mumvura yegungwa, mvura inomanikidza muviri wedu wese.
Mienzaniso 9 yeMutemo waPascal
1. Nzvimbo ye hydraulic jack yega yega ine 0,04 m2 uye 0,10 m2Kana simba rekuisa riri maNewton matanhatu, simba rekuisa guru chii?
Kukurukurirana:
Zvinozivikanwa kuti:
A1 = 0,04 XNUMX m2
A2 = 0,10 XNUMX m2
F1 = 5N
Akabvunzwa: F2 ?
Mhinduro:
Muchidzidzo chefizikisi chakapfuura, takadzidza misoro yesimba rezvikamu uye simba rekufamba . Musimba rezvikamu, takadzidza zvidimbu mukufamba kwekushandura ( kufamba kwemutsara , kufamba kwedenderedzwa , kufamba kweparabolic ). Musimba rekufamba, takadzidza miviri yakatsiga inotenderera. Munyaya iyi, takadzidza zvinhu mukuenzanisa. Kune mhando mbiri dzesimba, dzinoti static equilibrium uye dynamic equilibrium. Sekureva kwemutemo wekutanga waNewton, chinhu chiri mu static equilibrium kana chinhu chiri pazororo uye chinhu chiri mu dynamic equilibrium kana chinhu chiri kufamba nevelocity isingachinji. Pepa iri rinonyanya kutarisana nekukurukurirana kwe static equilibrium (zvinhu zvakamira).