Here's why:
* Buoyant force is an upward force exerted by a fluid (liquid or gas) that opposes the weight of an immersed object.
* Weight is the force of gravity acting on an object's mass.
When the buoyant force is greater than the weight, the upward force is stronger than the downward force. This creates a net upward force, causing the object to rise until it reaches the surface of the fluid.
Example: A boat floats because the buoyant force of the water pushing up on it is greater than the boat's weight.
