Mass-Spring System
A mass-spring system is a trolley attached to two posts by two springs. When the trolley is displaced to one side and then released, it oscillates back and forth with simple harmonic motion.

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Key terms in this lesson
- simple harmonic motion
- Motion in which the acceleration of an object is proportional to its displacement from equilibrium, and is always directed towards the equilibrium position, in the opposite direction to the displacement.
- restoring force
- The force acting on an oscillating object that always acts towards the equilibrium position and causes the oscillation.
More in Simple Harmonic Motion
- Oscillations
- Phase Difference
- Simple Harmonic Motion
- Simple Harmonic Motion
- A Simple Pendulum
- Energy and Simple Harmonic Motion
- Damping
- Resonance
All 9 lessons in Simple Harmonic Motion · All OCR A-level Physics topics