Physics
Simple Harmonic Motion
Quick fact
Simple harmonic motion occurs when the restoring force on an object is directly proportional to its displacement from equilibrium and acts toward it.
Why this is interesting
Have you ever noticed how a clock pendulum swings back and forth, always returning to the same spot? This is an example of simple harmonic motion—nature’s way of moving in rhythm.
Read the full explanation
Understanding Simple Harmonic Motion
Imagine a spring attached to a wall. When you stretch or compress it, it wants to return to its original length. This movement back and forth around the center point is called simple harmonic motion. The object moves fastest at the middle, slows down near the ends, and repeats this pattern endlessly.
A deeper explanation
In simple harmonic motion, an object oscillates about a central equilibrium position due to a restoring force that pulls it back toward that position. This type of motion follows a sine or cosine curve over time, with properties like period (the time for one full cycle), frequency (how often the motion repeats), and amplitude (maximum displacement from equilibrium). It is governed by Hooke’s Law in systems such as springs and pendulums.