The upward force exerted on any object in a fluid is called buoyant force.

Here's a breakdown:

* Buoyant force is the upward force that a fluid exerts on an object that is partially or fully submerged in it.

* It's directly related to the weight of the fluid displaced by the object.

* This force is what makes objects float.

Let me know if you'd like more detail about how buoyant force works!