Advanced AI Prompt for Inertia-Based Physics Cursor Follower

Act as a Web Animation Physicist. Engineer a hyper-realistic, physics-driven cursor follower that abandons simple linear interpolation (LERP) in favor of a true, algorithmic Spring Physics model. You must declare strict constants for atmospheric [FRICTION], object [MASS], and the [SPRING_STIFFNESS] tension pulling the follower toward the real pointer. Write a custom `requestAnimationFrame` 'tick' engine that mathematically calculates velocity and acceleration on every frame, resulting in a cursor that feels incredibly heavy, overshoots the target slightly, and exhibits organic, bouncing inertia when coming to a dead stop. In the code comments, explicitly detail the mathematical implementation of Hooke's Law (`F = -kx`) driving the script. Mandate an accessibility block that instantly short-circuits the physics loop and locks the follower to the exact mouse coordinates if `matchMedia('(prefers-reduced-motion: reduce)')` evaluates to true, preventing vertigo.