Laws of Floatation
Archimedes Principle: Principle of buoyancy which explains that when an object is immersed in a fluid, it appears to become lighter because there is an upward buoyant force exerted on the object. The buoyant force is equal to the mass of water displaced by the object.
The object will float if the buoyant force exceeds the mass of the object, and sink if the mass exceeds the buoyant force as:
• If density of material of body is equal to density of liquid, the body floats fully submerged in liquid in neutral equilibrium.
• When body floats in neutral equilibrium, the weight of the body is equal to the weight of displaced liquid.
• The center of gravity of the body and center of gravity of the displaced liquid should be in one vertical line.