Lihlooho tsa fisiks tse buang ka liketsahalo tsa tlhaho jj. tse amanang le fisiks.
Mehlala e 16 ea Lipotso tsa Motsamao oa hoetla o sa Lefelloeng.
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 ea molao tsa 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)
Mehlala e 6 ea Lipotso tsa Molao tsa 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
Mehlala e 5 ea lipotso tsa 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 sa Kgatelelo ya Mokelikeli , mokelikeli o mong le o mong o hatella dintho tsohle tseo o kopanang le tsona. Metsi ao re a kenyang ka khalaseng a hatella mabota a khalase. Ka ho tshwanang, ha re hlapa ka letamo la ho sesa kapa metsing a lewatle, metsi a hatella mmele wohle wa 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, re ithutile lihlooho tsa matla a likaroloana le matla a ho potoloha . Matla a likaroloana, re ithutile likaroloana motsamaong oa phetolelo ( motsamao o otlolohileng , motsamao o chitja , motsamao oa parabolic ). Matla a ho potoloha, re ithutile 'mele e potolohang e tiileng. Sehloohong sena, re ithutile lintho ka ho lekana. Ho na le mefuta e 'meli ea tekano, e leng tekano e tsitsitseng le tekano e matla. Ho ea ka molao oa pele oa Newton, ntho e boemong ba tekano e tsitsitseng haeba ntho e phomotse 'me ntho e boemong ba tekano e matla haeba ntho e tsamaea ka lebelo le sa fetoheng. Pampiri ena e shebane haholo le puisano ea tekano e tsitsitseng (lintho tse emeng).
Matla a ho potoloha ke lekala la mechini e ithutang motsamao wa ho potoloha o kenyeletsang matla, bongata, le mabaka a mang a susumetsang motsamao wa ho potoloha. Ntho e potoloha haeba dikarolo tsohle tsa ntho di tsamaya ho potoloha axis kapa pivot e fumanehang karolong e nngwe ya ntho. Motsamao wa ho potoloha o ithutwang sehloohong sena o shebane le motsamao wa ho potoloha mabapi le axis e tsitsitseng. Motsamao wa pulley, fene, motsamao wa CD/DVD ka phapusing ya CD/DVD , motsamao wa lemati kapa fensetere, motsamao wa silindara ya enjene, helikopthara kapa propeller ya sefofane, kapa propeller ya sekepe ke mehlala e meng ya motsamao wa ho potoloha mabapi le axis e tsitsitseng. Na o kile wa bona top e potolohang? Sebaka sa axis ya top e potolohang se dula se fetoha (ho sekamela ha top ho atisa ho fetoha), ka hona motsamao wa ho potoloha o kang o fumanwang ke top e potolohang ha o ithutwe sehloohong sena.
Ho Utloisisa Melao-motheo ea Batho ba Batšo
Haeba re kopanya metsi a chesang le a batang ka setshelong se bulehileng (mohlala, bakete), mocheso o fetela ho tloha metsing a chesang ho ea metsing a batang. Hobane setshelo se bulehile, mocheso o mong o fetela moeeng. Setshelo le sona sea futhumala. Mocheso o lokolloang ke metsi a chesang ha o monyehe feela ke metsi a batang empa hape o monyeha ke moea le setshelo. Tabeng ena, bakete ke sistimi e sa arohaneng.
Ha re kopanya metsi a chesang le a batang ka har'a thermos e koetsoeng, mocheso o fetela ho tloha metsing a chesang ho ea metsing a batang. Thermos ke sistimi e arohaneng , kahoo ha ho mocheso o fetisetsoang moeeng kapa ho thermos. Mocheso o lokolloang ke metsi a chesang o monngoa feela ke metsi a batang ho fihlela motsoako o fihla tekanyong ea mocheso.