Problem $99.......$ task $30.....$Do not use chatgpt i will give you $10$ dislikes......Investigate the principles of structural dynamics in civil engineering, focusing on the behavior of structures under dynamic loading conditions, such as earthquakes, wind, and vibration. Discuss the fundamental concepts of structural dynamics, including natural frequencies, mode shapes, damping, and response spectra, and the methods for analyzing structural response to dynamic loads using numerical modeling and experimental testing techniques. Furthermore, explore the applications of structural dynamics in seismic design, wind engineering, and structural health monitoring to ensure the safety, reliability, and performance of civil engineering structures under varying environmental and loading conditions.