Understanding Upthrust and Buoyancy
* Upthrust (Buoyant Force): The upward force exerted by a fluid (like water or air) on an object submerged in it.
* Archimedes' Principle: The upthrust on an object submerged in a fluid is equal to the weight of the fluid displaced by the object.
Floating Condition
For an object to float, the upthrust force must be equal to or greater than the object's weight.
Calculation
Since the object weighs 1600 N, the smallest upthrust force needed to make it float is 1600 N.
In other words: The upthrust force needs to be at least as strong as the object's weight to counteract gravity and allow it to float.
