05/10/2026
Why does a huge boat float — while a small stone sinks? 🚤
It comes down to forces, pressure and upthrust.
In this short AQA GCSE Physics explanation, I use a real boat to show how the upward buoyant force relates to the weight of fluid displaced — and why a floating boat is in equilibrium.
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Save this for GCSE Physics revision and share it with someone studying forces.