MOMENTI INERSIYa

MOMENTI INERSIYa, buzurgiest, ki taqsimoti massaro dar jism muayyan mekunad va dar barobari massa meyori inertnokii jism (hangomi harakati gayripeshravandai on) meboshad. Dar mekhanika Momenti inersiyai tarz va Momenti inersiyai markazshitobro farq meknand. Momenti inersiyai tirii jism nisbat ba tiri 1 buzurgiest, ki az barobarii muayyan karda meshavad (t{ — massai nuqtahoi jism — masofai in nuqtaho az tiri kh, r — zichii massavi, V —hajmi jism). Buzurgii /, meyori inertnokii jism hangomi dar girdi tir charkhzanii on meboshad. Andozanokii Momenti inersiya 1<2L/, vohidi chenkuniash kg m2 yo g  sm2 meboshad. Momenthoi inersiyai markazshitobi jism nisbat ba sistemai tirhoi rostkunja kh, u, kh, ki az nuqtai O guzaronda shudaand, buzurgihoeand, ki az barobarihoi 1khu =

= 2t Wi (2)i yo muvofiqan bo integralhoi hajmii onho muayyan karda meshavand. In buzurgiho kharakteristikahoi nomuvozinatii dinamikii massaho meboshand. Mas., hangomi charkhzanii jism dar atrofi tiri kh quvvahoi fishor 6a podshinnikhoe, ki dar onho tir mahkam karda shudaast, ba qimathoi 1khg va 1ug vobasta meboshand. Momenti inersiyai jismi shaklash murakkabro dar tajriba muayyan mekunand. Mafhumi Momenti inersiya dar halli bisyor masalahoi mekhanika va tekhnika istifoda meshavad.

Ad.: Favorin M. V., Momenti inersii tel. Spravochnik, M., 1970.