(II) A spherical balloon has a radius of 7.15 m and is filled with helium. How large a cargo cai it lift, assuming that the skin and structure of the balloon have a mass of 930 kg? Neglect the buoyant force on the cargo volume itself.
We have to calculate the maximum mass of the cargo that the balloon can lift from the given problem statement.
Step 1 of 4</p>
Archimedes Principle: The buoyant force acting on the balloon placed in air of density is equal the weight of the air displaced by the volume of the balloon. Mathematically,
Step 2 of 4</p>
Figure below show the free body diagram balloon-load system.