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Mass-Spring System

AQA A-level PhysicsSimple Harmonic MotionLesson 5 of 9

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.

The frequency of oscillations depends on the mass and the spring constant k or stiffness of the spring.

Diagram

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Key terms in this lesson

Simple harmonic motion
Motion in which the acceleration of an object is directly proportional to its displacement from equilibrium and is always directed towards that equilibrium position.

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