Compared with the buoyant force of the atmosphere on a 1-liter helium-filled balloon, the buoyant force of the atmosphere on a nearby 1-liter solid iron block is
A)considerably less.
B)considerably more.
C)the same.

Question

Quizplus · Accepted Answer

The buoyant force of the atmosphere on an object depends on the volume of fluid displaced, not on the object's content or weight. Since both the helium-filled balloon and the solid iron block displace the same volume of air (1 liter), the buoyant force on them is the same.

Compared with the Buoyant Force of the Atmosphere on a 1-Liter