* Weight: This is the force of gravity acting on an object's mass. It's a downward force. We usually calculate it with the formula: Weight = mass x acceleration due to gravity (W = mg)
* Buoyant Force: This is an upward force exerted on an object submerged in a fluid (liquid or gas). It's caused by the pressure difference between the fluid at the top and bottom of the object. The buoyant force is equal to the weight of the fluid displaced by the object (Archimedes' Principle).
Here's a simple analogy:
Imagine a balloon filled with air. Its weight is pulling it down. But when you submerge it in water, the water pushes back on the balloon with an upward buoyant force. If the buoyant force is greater than the weight, the balloon will float. If the weight is greater, the balloon will sink.
In summary:
* Weight is the force pulling an object downwards due to gravity.
* Buoyant force is the upward force exerted by a fluid on an object submerged in it.
