How does a big heavy balloon with a basket full of people manage to float in the air
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Solution
This big heavy balloon is actually called Hot-air balloon. Hot-air balloons float because the air trapped inside the balloon is heated up by a burner. This makes it lessdenser than the air outside. That is density of air inside balloon is less than outside air. Less density substance can easily float in air. Thats why hot air balloon float in air.