Mechanical models are simplified representations of physical systems that help us understand and predict their behavior. These models often use gears, levers, and other mechanical components to simulate real-world processes. For example, a pulleys system can demonstrate how forces are distributed in lifting heavy objects. In engineering and physics, mechanical models are essential for testing theories and designs before actual implementation. They allow researchers and designers to visualize complex interactions and make adjustments as needed. Common applications include automotive design, aerospace engineering, and robotics, where understanding mechanics is crucial for success.