Homework Help: physics

Posted by katie on Wednesday, April 4, 2012 at 12:38pm.

A recreational (open) hot air balloon (i.e., Pinside is approximately the same as Poutside) has a volume of 2227 m3 when fully inflated. The total weight of the balloon, basket, ballast and pilot is 1775.6 N (399 lb). How much less dense must the air in the balloon be than the surrounding atmosphere in order to keep the balloon floating level near the ground?

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