A hot air balloon has a volume of 440×10^3 m.calculate the buoyant force that the surrounding cold air exerts on the balloon? given that the density of the surrounding air is 2.58kg/m3
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Hey kid! Did you understand archimedes principle? If not study it properly and try again before looking onto the answer!
Buoyant Force = Weight of the volume of cold air displaced by the balloon due to it's presence. (That's what actually archimedes noticed)
So how to find -- Weight of the volume of cold air displaced by the balloon due to it's presence?
What is the volume displaced? 440000m³? Then how much mass does this volume of air correspond to? Think about it! and atlast multiply the mass with "g" to get the right answer!
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