Dynamic loads refer to forces that change over time, often due to movement or external impacts. These loads can arise from various sources, such as wind, earthquakes, or the motion of vehicles. Unlike static loads, which remain constant, dynamic loads can create varying stresses on structures, making them crucial to consider in engineering and design. In engineering, understanding dynamic loads is essential for ensuring the safety and stability of structures like bridges and buildings. Engineers use principles from mechanics and structural analysis to calculate how these loads affect materials and design systems that can withstand them effectively.