he air temperature inside a hot-air balloon is 80oC, while the surrounding atmospheric air temperature is only 15oC. The mass of the empty-balloon material is 10 kg. When inflated completely, the volume of hot air within the balloon is 5000 m3 . Determine the maximum mass of the load that the balloon can lift from the ground in this situation. Given: ρair (at 15oC) = 1.22 kg/m3 , ρair (at 80oC) = 1.01 kg/m3 . If only 80% of the maximum load mass is used, what would be the balloon’s initial acceleration upward (neglecting any air drag effect)?
he air temperature inside a hot-air balloon is 80oC, while the surrounding atmospheric air temperature is only 15oC. The mass of the empty-balloon material is 10 kg. When inflated completely, the volume of hot air within the balloon is 5000 m3 . Determine the maximum mass of the load that the balloon can lift from the ground in this situation. Given: ρair (at 15oC) = 1.22 kg/m3 , ρair (at 80oC) = 1.01 kg/m3 . If only 80% of the maximum load mass is used, what would be the balloon’s initial acceleration upward (neglecting any air drag effect)?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The air temperature inside a hot-air balloon is 80oC, while the surrounding atmospheric air temperature is only 15oC. The mass of the empty-balloon material is 10 kg. When inflated completely, the volume of hot air within the balloon is 5000 m3 . Determine the maximum mass of the load that the balloon can lift from the ground in this situation. Given: ρair (at 15oC) = 1.22 kg/m3 , ρair (at 80oC) = 1.01 kg/m3 . If only 80% of the maximum load mass is used, what would be the balloon’s initial acceleration upward (neglecting any air drag effect)?
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