Mechanical springs are devices that store and release energy through elastic deformation. They are made from materials like steel and can be found in various shapes, such as coils or leaf forms. Springs work by compressing or stretching, allowing them to return to their original shape when the force is removed. These components are widely used in everyday items, from pens to automobiles. They play a crucial role in mechanisms like suspension systems and valve actuators, helping to absorb shocks, maintain tension, and provide resistance. Their versatility makes them essential in both industrial and consumer applications.