If you fill up a regular 12" latex balloon with helium how much weight can that single balloon lift up?
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12" = 0.3048 m
volume is ⁴/₃πr³ = 0.015 m³
Lifting power of helium is about 0.9 kg/m³, so you can lift 0.0135 kg or about half a US ounces
less the weight of the balloon itself.
edit, corrected
volume is ⁴/₃πr³ = 0.015 m³
Lifting power of helium is about 0.9 kg/m³, so you can lift 0.0135 kg or about half a US ounces
less the weight of the balloon itself.
edit, corrected