A balloon filled with helium gas has an average density of ${}_b=0\mathrm{.}26k\frac{g}{m^3}.$ The density of the air is about ${}_a=1\mathrm{.}23k\frac{g}{m^3}.$ The volume of the balloon is $V_b=0\mathrm{.}087m^3.$ The balloon is floating upward with acceleration $a.$

Randomized Variables

$e_b=0\mathrm{.}26k\frac{g}{m^3}$

$V_b=0\mathrm{.}087m^3$