Coursework 3.6: Balloons are often filled with helium gas because it weighs only about one-seventh of what air weighs under identical conditions. If the balloon is assumed to be spherical with a diameter of 12 m and carries two people, 70 kg each, determine the net force and acceleration of the balloon. Assume that the density of air is 1.16 kg/m³ and neglect the weight of the ropes and cage. Assumptions: neglect weight of ropes and cage Analysis: The weight of the two people and that of helium is offset by the buoyancy force. Helium D = 12 m Piie =Pair m = 140 kg

Coursework 3.6: Balloons are often filled with helium gas because it weighs only about one-seventh of what air weighs under identical conditions. If the balloon is assumed to be spherical with a diameter of 12 m and carries two people, 70 kg each, determine the net force and acceleration of the balloon. Assume that the density of air is 1.16 kg/m³ and neglect the weight of the ropes and cage. Assumptions: neglect weight of ropes and cage Analysis: The weight of the two people and that of helium is offset by the buoyancy force. Helium D = 12 m Piie =Pair m = 140 kg

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.35P: The weight of the cylindrical tank is negligible in comparison to the weight of water it contains...

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