Application of Archimedes' Principle
Hot Air Balloon
1. Buoyant Force=weight of hot air balloon, hot air balloon is at a constant height
2. Buoyant Force> weight of hot air balloon, hot air balloon rises upwards
3. Buoyant Force<weight of hot air balloon, hot air balloon is descend.
To ensure the hot air balloon is easier to move upwards:-
a. increase the volume of hot air
b. heat the air in the hot air balloon.
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