PRINSIPI D’ALAMBER-LAGRANJ

PRINSIPI D’ALAMBER-LAGRANJ, yake az prinsiphoi asosii mekhanika ast. Tarifash: agar ba quvvahoi faole, ki ba nuqtahoi sistemai mekhanikii aloqai mekhanikiashon ideali tasir mekunand, quvvahoi inersiyaro zam kunem, on goh dar har lahzai vaqt hosili jami korhoi elementarii quvvahoi faol va quvvahoi inersiya ba­roi joyivazkunii dilkhohi sistema ba sifr barobar khohad shud. Prinsipi D’Alamber- Lagranj usuli umumii halli masalahoi dinamika va statikaro ifoda namuda, harakati sistemai mekhanikiro biduni reaksiyahoi aloqai nomalum tadqiq menamoyad. Mavsum ba olimoni fransavi J. D’Alamber va J. Lagranj.