Tension springs are mechanical devices designed to absorb and store energy when they are stretched. They are made from coiled metal wire and work by pulling apart, creating tension. When a force is applied, the spring elongates, and when the force is removed, it returns to its original shape. Tension springs are commonly used in various applications, such as automobiles, furniture, and industrial machinery. These springs are characterized by their ability to exert a force in the opposite direction of the applied load. The strength and performance of a tension spring depend on factors like its material, coil diameter, and wire thickness. Proper design ensures that the spring can handle the required load without breaking or deforming.