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  4. When a balloon of radius 10m having of mass 100kg is filled with helium, at 1.66 bar in which given density of air is 1.2kgm- 3 and R=0.083 bar dm3 K/mol. , the pay load will be:

Q. When a balloon of radius having of mass is filled with helium, at bar in which given density of air is and bar , the pay load will be:

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Solution:

Volume of displaced air = Volume of balloon

Mass of air displaced volume density


Mass of moles

Pay-load Mass of air displaced Mass of filled balloon

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