Helium Balloon
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. A spherical helium balloon lifts a basket plus cargo of mass 266.0 kg.
What must be the minimum diameter of the spherical balloon?
7.69 m
What must be the minimum diameter of the spherical balloon?
7.69 m
Discussion
NEW
how do you go about starting this?
NEW
Anonymous 2
First, solve for the volume of the balloon.
V*(a-b)= mass, where a is the density of air and b is the
density of helium and mass is left in kg.
Remember the formula for volume of a sphere is V=4/3(pi)
r^3. Set the volume you just got on one side and solve for
r, but they are asking for diameter so don't forget to
multiply the answer by 2.
how do you go about starting this?
NEW
Anonymous 2
First, solve for the volume of the balloon.
V*(a-b)= mass, where a is the density of air and b is the
density of helium and mass is left in kg.
Remember the formula for volume of a sphere is V=4/3(pi)
r^3. Set the volume you just got on one side and solve for
r, but they are asking for diameter so don't forget to
multiply the answer by 2.