posted by help on .
A helium balloon lifts a basket and cargo of total weight 2250 N under standard conditions,
at which the density of air is 1.29 kg/m3 and
the density of helium is 0.178 kg/m3 .
What is the minimum volume of the
balloon? The acceleration of gravity is
9.81 m/s2 .
Answer in units of m3