Question

What is the difference between centre of gravity and centre of buoyancy?

Answer 1

Every floating object has a center of buoyancy and a center of gravity. The center of gravity is located at that point where the total weight of an object balances so that, if it were suspended in air from that point in any position, it would not rotate. The center of buoyancy is at the center of gravity of that water that the floating object displaces. A fully submerged, free-floating object will always float with its center of gravity directly under its center of buoyancy.