Question

An object in a fluid experiences a buoyant force from the fluid. If the object is completely immersed, on which does the magnitude of this force depend on?

Answer 1

The magnitude of the buoyant force on an object fully immersed in a fluid is determined by the weight of the fluid it displaces, a principle formulated by Archimedes.

Step-by-step explanation:

The magnitude of the buoyant force on an object that is completely immersed in a fluid depends on the weight of the displaced fluid. This concept is described by Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid that the object displaces. For an object to float, rise, or remain suspended, the buoyant force must be greater than, equal to, or less than the object's weight, respectively.

When an object is completely submerged, the space that the object occupied would be filled with fluid if the object were removed. Importantly, the weight of this fluid is supported by the surrounding fluid, indicating that the buoyant force on the object is indeed the weight of the displaced fluid.

Answer 2

Weight of the fluid that the object displaces.

Step-by-step explanation:

When the fluid is completely immersed in a fluid, it experiences pressure from all the direction. While the object is immersed in the fluid a force acts on it in the opposite direction, i.e., upwards. This force is termed as buoyant force.

Also, as per the Archimedes' Principle, the force experience by the object is the same as the weight of the fluid that gets displaced by the object.

Thus on complete immersion of the object in the fluid, it experiences the force same as the weight of the fluid that gets displaced