3 Mehlala ea lipotso tsa motsamao o otlolohileng ho ea holimo
1. Bolo e lahlelwa holimo ka lebelo la pele la 20 m/s. Fumana bophahamo bo phahameng ka ho fetisisa ba bolo. g = 10 m/s2
Puisano
Motsamaong o otlolohileng hodimo, ha ntho e nyolohela hodimo, e a fokotseha, mme ha e kgutlela tlase, e a potlaka. Ka hona, motsamao o otlolohileng hodimo le wona ke mohlala wa GLBB.
Foromo ea GLBB :
vt = vo + ho
s = vo t + ½ ho2
vt2 = vo2 + Li-axle tse 2
3 Mehlala ea lipotso tsa motsamao o theohelang o otlolohileng
1. Bolo e lahlelwa fatshe ka ho otloloha ho tloha mohahong o nang le mekato e mengata ka lebelo la pele la 10 m/s mme e fihla fatshe kamora metsotsoana e 2. Lebelo la bolo ke lefe ha e otla fatshe? g = 10 m/s2
Puisano
Hoa tsebahala hore:
vo = 10 m/s
t = metsotsoana e 2
g = 10 m/s2
O botsitse:
16 Lipotso tsa Mohlala Motsamao oa hoetla oa mahala.
1. Tholwana ya kokonate e tloha kutung mme e fihla fatshe kamora metsotswana e meraro. Lebelo la kokonate ha e fihla fatshe ke lefe? g = 10 m/s2
Puisano
Hoa tsebahala :
t = metsotsoana e 3
g = 10 m/s2
E botsitsoe :
4 Mehlala ea bongata bo nkiloeng, tekanyo ea machaba le liforomo tsa yuniti
| Bongata bo nkiloeng | Foromo | Chelete e ka sehloohong e entsoe ka eng? | Litekanyo tsa bongata bo nkiloeng | Sistimi ea Machaba ea Liyuniti Bongata bo fumanoeng |
| likhoeli | Bolelele x bophara | Bolelele (2) | [L2] | m2 |
| Bophahamo ba cuboid | Bolelele x bophara x bophahamo | Bolelele (3) | [L3] | m3 |
| Botenya | Boima / Molumo | Boima (1), bolelele (3) | [M] / [L]3] = [M][L-3] | Kg / m3 |
| Kecepatan | Sebaka / nako | Bolelele (1), nako (1) | [L] / [T] = [L] [T]-1] | m / s |
| Ho potlaka | Lebelo / nako | Bolelele (1), nako (2) | [L] [T]-1] / [T] = [L] [T]-2] | m / s2 |
| Gaya | Boima x ho potlaka | Boima (1), bolelele (1), nako (2) | [M][L][T-2] | Kg m/s2 |
| Khoebo | Matla x ho falla | Boima (1), bolelele (2), nako (2) | [M][L][T-2][L] = [M][L2][T-2] | Kg m2/s2 |
Ho fumana palo ea bongata ba motheo, qala ka ho fumana foromo ea bongata bo nkiloeng.
Litaelo tsa Teko Molao oa Archimedes
Sepheo sa teko ea molao ea Archimedes:
– Baithuti ba ka lekanya bophahamo le boima ba metsi a tlositsweng ke ntho e qoelitsoeng ka metsing.
– Baithuti ba ka tseba le ho utloisisa molao oa Archimedes
Lisebelisoa le thepa:
– Setshelo se mahareng (1)
– Setshelo se senyenyane (1)
– Dynamometer (1)
– Lahlela (1)
6 Lipotso tsa Mohlala Molao oa Archimedes
1. Ke bophahamo bofe ba lejwe bo bewang metsing a lewatle haeba boima ba metsi a lewatle bo tlositsweng ke lejwe e le di-Newton tse 2? Boima ba metsi a lewatle = 1025 kg/m3.
Puisano
Lipotso tse 5 tsa mehlala ho phaphamala
1. Boima ba mojaro o moeeng ke 3 N, boima ba mojaro o metsing ke 2,8 N. Metsi a sebelisa matla a makae ho phaphamala mojaro?
Puisano:
Ho utloisisa Molao oa Pascal
Jeke/lift ea hydraulic e sebetsa joang ha e sebelisoa ho phahamisa koloi? Li-brake tsa hydraulic li sebetsa joang ha li sebelisoa ho fokotsa lebelo la koloi?
Jwalo ka ha re ithutile sehloohong se seholo Khatello ea MokelikeliMokelikeli o mong le o mong o hatella lintho tsohle tseo o kopanang le tsona. Metsi a kentsoeng khalaseng a hatella mabota a khalase. Ka ho tšoanang, ha re sesa letamong la ho sesa kapa metsing a leoatle, metsi a hatella 'mele oohle oa rona.
Mehlala e 9 ea Molao oa Pascal
1. Sebaka se nang le karolo e tšekaletseng ea jack e 'ngoe le e 'ngoe ea hydraulic ke 0,04 m2 le 0,10 m2Haeba matla a ho kenya e le 5 Newtons, matla a ho hlahisa a phahameng ka ho fetisisa ke afe?
Puisano:
Hoa tsebahala hore:
A1 = 0,04 limithara2
A2 = 0,10 limithara2
F1 = 5N
E botsitsoe: F2 ?
Karabo:
Thutong e fetileng ea fisiks, sehlooho se seholo se ile sa ithutoa. matla a dikarolwana dan tao matla a ho potoloha. Ho diphetoho tsa dikarolwana re ithuta dikarolwana motsamaong wa phetolelo (motsamao o otlolohileng, motsamao o chitja, motsamao oa parabola). Ho dynamics ea potoloho, re ithuta 'mele e tiileng e potolohang. Sehloohong sena, re ithuta lintho ka tekano. Ho na le mefuta e 'meli ea tekano: tekano e sa fetoheng le tekano e matla. Ho ea ka molao oa pele oa Newton, ntho e boemong ba tekano e sa fetoheng haeba e phomotse, 'me ntho e boemong ba tekano e matla haeba e tsamaea ka lebelo le sa fetoheng. Pampiri ena e shebane haholo le puisano ea tekano e sa fetoheng (lintho tse phomotseng).
