The amount of buoyant force is equal to the weight of the displaced water. The VOLUME of the displaced water is equal to the part of the solid that is submerged - thus, the buoyant force is equal to this volume, times the density of the water.
On its volume.
buoyant force = density of the liquid*Volume*gravity. so the buoyant force is directly proportional to the density of a liquid.
As soon as an object is completely submerged in the liquid, displacing the maximum volume of liquid.
In the general case, these are quite unrelated; the buoyant force is related to the object's volume, not its weight. Or the part of the volume that is submerged in the liquid or gas. However, if the object is freely floating, then the buoyant force will be equal to its weight.
Over the area not volume
On its volume.
That completely depends on the object's volume (which you have not mentioned). The buoyant force on it is equal to the weight of an equal volume of water.
The buoyant force is equal to the amount of water displaced. Multiply the volume of the object by the density of water - then convert that to a force (at about 9.8 newton/kilogram).
The buoyant force is zero when the object is just touching the liquid. As the object displaces more volume, the buoyant force increases until the object is completely submerged. Once the object is submerged, it doesn't matter how deep it is, the buoyant force remains constant.
buoyant force = density of the liquid*Volume*gravity. so the buoyant force is directly proportional to the density of a liquid.
The volume of the submerged object.
As soon as an object is completely submerged in the liquid, displacing the maximum volume of liquid.
In the general case, these are quite unrelated; the buoyant force is related to the object's volume, not its weight. Or the part of the volume that is submerged in the liquid or gas. However, if the object is freely floating, then the buoyant force will be equal to its weight.
Over the area not volume
VOLUME :)
volume
The buoyant force on a submerged object is equal to the weight of the displaced fluid. The density of the water is 1,000 kg/m3, so its weight is 1,000 N/m3. The volume of the rock is 0.3 m3. The buoyant force = weight of the displaced water = (0.3 x 1,000) = 300 N.