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

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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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
Ple =Pair
m = 140 kg
Transcribed Image Text: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 Ple =Pair m = 140 kg
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