Thanks Kurdt. I know that the buoyant force is equal to the weight of the displaced air, which is represented by (1.23)(4/3*pi*(0.1m)^3)(9.8).
But I'm not sure how to calculate the weight of the balloon. Do I use the density of the helium gas and multiply it by Volume and gravity (Weight =...
Homework Statement
A 1.10 g balloon is filled with helium gas until it becomes a 20.0 cm-diameter sphere.
What maximum mass can be tied to the balloon (with a massless string) without the balloon sinking to the floor?
Density of Air: 1.28 kg/m^3
Density of Helium gas : 0.18 kg/m^3
Volume of a...