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14b Archimedese seadus

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1. Hdrostaatika

11. Rhk seisvas vedelikus12. Pascali seadus13. hendatud anumad

14. Archimedese seadus15. Rhujud kaldpinnale16. Rhujud kverpinnale17. Suhteline tasakaal

18. Pstuvus

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14b levaade

leslkkeju arvutusKeha kaalu leidmine

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14b pivljundid

Teadmised mis on leslkkejud millest sltub

leslkkejud

Oskused arvutada ujuva kehakaalu

mrata keha

tstmiseks vajalikujudu

arvutada kehalemjuvat

leslkkejudu

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14b Kirjanduse loetelu[1] Hdraulika ja pumbad. AleksanderMaastik jt.[2] Hdromehaanika. K. Laigna[3] Hdraulika. L.Tepaks[4] Hdraulika.J. Rabinovit

[5] . .. [6] . .. , ..[7] . . . [8] . ..

[9] Engineering fluid mechanics. W.P.Graebel

[10] Understanding Hydraulics. L.Hamill

[1] lk 39-40[2] lk 49[3] lk 48-49[4] lk 57

[5] . 65[6] . 48-49

[7] . 52-54[8] . 84-85

[9] p.70-72

[10]

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leslkkeju arvutus

F=gVm = V

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Nide

Pontooni svis - h, teki pindala -S. Kui suur on leslkkeudvees?

F = S*h*g*

http://thedailyworld.com/sites/files/article/368510_web_pontoon3-c.jpghttp://thedailyworld.com/sites/files/article/368510_web_pontoon3-c.jpghttp://thedailyworld.com/sites/files/article/368510_web_pontoon3-c.jpg

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Nide

Silinder pikkusega a ja raadiusega Rujub magedas vees. Silindri kuiva osakrgus on h. Mrata keha kaal

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Kontrolli oma teadmisi

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Kontrolli oma teadmisi

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Keha kaalu leidmine

F = mg

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Nide

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Nide 1. Teha kindlaks, kas kehaujub vi uppus.

2. Leida veealuse osaruumala.

3. Leida vlja trjutud veekaal.

Kontroll: Korrutada kogu keha

ruumala selle tihedusega (kui keha

on hest materjalist) ja

raskuskiirendusega.

NB! Kaal on judnjuutonites, mass on

kilogrammidesF = mg = 1 kg x 9,8 m/s2 = 10 N

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Ksimused

Kui keha uppus, kas sellele mjub Archimedesejud?

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Kontrolli oma teadmisi

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