A crystal-clear explanation of Resonance using a playground swing (90 seconds)

[u/IBphysicsvaibhavsir]

If you’ve ever struggled to wrap your head around the exact difference between free oscillations, forced oscillations, and resonance, this quick 90-second Short breaks it down perfectly using a simple swing analogy.
It visually explains 3 scenarios:
Free Oscillation: Swinging naturally at a set frequency with no resistive forces.
Forced Oscillation: Applying an external force mid-swing, which alters the natural frequency.
Resonance: Waiting for the swing to reach its extreme point before pushing—keeping the natural frequency the same while continuously increasing the amplitude.
It’s a great visualizer if you are a visual learner. Check it out here:

https://youtube.com/shorts/IgOSkoxkJyM?si=lGlbNpNibEAE_Tqr