Question

What will happen to a rock released into the deep ocean? (in the buoyant force's point of view)

Answer 1

For most rocks released into the ocean, I assume that the rock would sink. This is because the buoyant force of the water lifting up the rock is weaker than the force of gravity pulling the rock downward.
There are some examples of rocks that can float, like pumice rocks, which have many hollow spaces in their structure. In that case, it is possible that the buoyant force would actually be stronger than the force of gravity. Otherwise, the rock would sink, like, well, a rock.

Answer 2

Great! Thank you.