[熱身賽第一輪] 彈簧力 [Warm-up Round 1] Spring Forces

unit: Force and Translational Dynamics topic: Spring Forces learning objective: Describe the force exerted on an object by an ideal spring. essential knowledge: An ideal spring has negligible mass and exerts a restoring force proportional to the displacement from its relaxed length, given by Hooke’s law ($F = –k \Delta x$). The spring force always acts toward the equilibrium position of the object–spring system.