Definition: A swingback is a term used in the field of physics and engineering to describe a phenomenon where a system experiences a restoring force that opposes its motion. This type of force is often referred to as a "spring force" or "spring torque". The spring force is responsible for the movement, and it can be described mathematically using a simple equation: F = -kx, where F is the force acting on the system, k is the spring constant (a measure of how stiff or