As a rock sinks deeper and deeper into water of constant density,what happens to the buoyant force exerted on it by water on it if it started above the surface of the water?
A)The buoyant force keeps increasing steadily.
B)The buoyant force remains constant.
C)The buoyant force first increases and then remains constant.
D)The buoyant force steadily decreases.

Question

Quizplus · Accepted Answer

The buoyant force increases as the rock is submerged because it depends on the volume of water displaced. Once fully submerged, the volume displaced remains constant, so the buoyant force remains constant.

As a Rock Sinks Deeper and Deeper into Water of Constant