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ID number:296233
 
Evaluation:
Published: 04.11.2013.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Vienkāši mehānismi
Svira, trīsis, slīpā plakne, ķīlis, skrūve, griezstuve.
Svira ir ciets kermenis, kas var griezsties ap nekustīgu atbalstu.

Trīsis
Trīsis ir ritenītis, kura malā ir izveidota rieva un kurš nostiprināts skavā. Pāri trīsim parasti ir pārvilkta virve, trose vai ķēde. Trīšus iedala kustīgajos un nekustīgajos trīšos. Kustīgā trīša ass paceļas un nolaižas reizē ar kravu, savukārt nekustīgā trīša ass nepārvietojas, paceļot. kravu.

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