π ARCHIMEDES BUOYANCY PRINCIPLE
A coin thrown in the sea will sink like a stone, but a steel ship will float. This is Archimedes’ buoyancy principle, which he discovered in his bath as he puzzled over how to weigh the gold content in a possibly false crown. His legendary “Eureka” announced he had discovered the fundamental law of water and weight displacement. The Bible state about Archimedes bouyancy principle that iron metal can float on water.
π In 2 Kings 6:4-6 And he went with them.They went to the Jordan and began to cut down trees. As one of them was cutting down a tree, the iron axhead fell into the water. βOh no, my lord!β he cried out. βIt was borrowed!βThe man of God asked, βWhere did it fall?β When he showed him the place, Elisha cut a stick and threw it there, and made the iron float. β
Archimedes’ buoyancy principle states that buoyant force — what keeps the ship afloat — is equal to the weight of water that is displaced when the ship enters the ocean. If the weight of displaced water is at least equal to the weight of the ship, the ship will float. The displaced water around a coin weighs less than the coin, so the coin will sink.

