Effect of End Mass Rotation on the Dynamic Characteristics of a Cantilever Beam Using the Rayleigh-Ritz Principle. NTU Journal of Engineering and Technology, [S. l.], v. 5, n. 1, 2026. DOI: 10.56286/dx3hmj35. Disponível em: https://journals.ntu.edu.iq/index.php/NTU-JET/article/view/1715.. Acesso em: 1 apr. 2026.