Here's why:
* Buoyant force is the upward force exerted by a fluid (liquid or gas) on an object submerged in it.
* Archimedes' Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
* If the buoyant force is greater than or equal to the object's weight, the object will float.
* If the buoyant force is less than the object's weight, the object will sink.
So, the strength of the buoyant force relative to the object's weight is the key factor in determining whether it floats or sinks.
