MOMENTI QUVVA

MOMENTI QUVVA, buzurgii mekhanikiest, ki tasiroti berunaro ba jism (yo ba sistemai jismho) tavsif medihad va tagyiryobii harakati charkhzanii jismro muayyan mekunad. Momenti quvva s-bat ba markaz (nuqta)-i O (rasm) — buzurgii vektorii M ast, ki ba hosili zarbi radiusvektori (g) az markaz O ba nuqtai guzorishi quvva guzarondashuda va vektori quvva g barobar meboshad: M = = [g • F] Momenti quvvaro az rui formulai M = Fr sin a meyoband, ki dar on a kunji bayni g va F. / = g sin akitfi quvvai F (masofa az nuqtai O to khati tasiri quvva) meboshad. Momenti quvva nisbat ba tiri a buzurgii skalyarii Ma ast, ki ba proeksiyai vektori Momenti quvva nisbat ba nuqtai dilkhohi O bar in tir barobar ast (qimati Ma ba mavqei O dar mehvari a vobasta nest). Momenti quvva dar sistemai vohidhoi baynalkhalqi (SI) bo N m chen karda meshavad.