Question

A blimp is filled with 300 m3 of helium. How big a payload can the balloon lift (the density of air is 1.29 kg/m3 , the density of helium is .179 kg/m3 .)

Answer 1

$P=mg=\rho_{air}Vg-\rho_{helium}Vg\to m=(\rho_{air}-\rho_{helium})V=$

$=(1.29-0.179)\cdot300=333.3\ (kg)$ . Answer