A spherical inflated balloon is submerged in a pool of water. If it is further inflated so that its radius doubles, how is the buoyant force affected?
A) 8 times larger
B) not at all
C) 4 times larger
D) 2 times larger
E) 6 times larger

Question

Quizplus · Accepted Answer

The buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. When the radius of the spherical balloon doubles, its volume increases by a factor of $2^3 = 8$, meaning it displaces 8 times more water, resulting in a buoyant force that is 8 times larger.

A Spherical Inflated Balloon Is Submerged in a Pool of Water