1. The buoyancy of an object is determined by the density of the liquid and the volume of the liquid it displaces, and has nothing to do with the depth of the object immersed in the liquid, the mass and density of the object and the shape of the object.
2. Archimedes principle is a physical law used to describe and calculate the buoyancy and direction of objects in fluid, which was first put forward by Archimedes.
3. It points out that if the lower surface of the object is not in complete contact with the fluid, the object submerged in the static fluid will be subjected to buoyancy, for example, piers sinking into the seabed, sunken ships, piles driven into the bottom of the lake, etc.
4. In this case, the force of water at this time is not equal to the force specified in the principle. It laid the foundation of hydrostatics, and this conclusion can also be extended to gases.
Introduction to Archimedes:
Archimedes, born in Syracuse, Sicily, Greece, was an ancient Greek mathematician, physicist, inventor, engineer and astronomer, and the founder of statics and hydrostatics.
2. In 267 BC, he went to Alexandria, Egypt to study with erato Sese and Canon, and absorbed the excellent cultural heritage of the East and ancient Greece, which had a great influence on his later scientific career and laid the foundation for future scientific research.
When Archimedes was old, war broke out between Syracuse and Roman Empire. Although he disapproved of the war, he had to do his duty to defend his motherland. Archimedes saw the national crisis, and the sense of responsibility to defend his country prompted him to stand up against the enemy, so he racked his brains and invented weapons against the enemy day and night.
4. Archimedes discovered the buoyancy theorem and lever principle, was the founder of statics and hydrostatics, and enjoyed the reputation of "the father of mechanics". He made great contributions to the development of mathematics and physics, and exerted an indelible influence on social progress and human development.