Question

Hiw is archimedes priciple applicable in hot air balloon

Answer 1

If a hot air balloon is immersed completely in a fluid , taking in account of the Archimedes principle when inside air is heated it expands in such a way displacing more fluid outside which results in the increasing of buoyant force by surrounding air. This buoyant force must exceed the weight of passengers, equipments on board and the basket. As a result the hot air balloon will experience sufficient buoyant force to completely lift off the ground