Multiple Choice
A large spherical air balloon is filled with helium.If the balloon is to lift three people,each approximately 80 kg,plus a basket and balloon outer covering material of mass 50 kg,calculate the minimum radius of the balloon.Assume values of the density of air and helium to be 1.29 kg/m3 and 0.18 kg/m3 respectively.
A) 62 m
B) 8.0 m
C) 4.0 m
D) 20 m
E) 5.0 m
Correct Answer:
Verified
Correct Answer:
Verified
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