TOPIC 05-ARCHIMEDESโS PRINCIPLE AND THE LAW OF FLOTATION
Archimedesโs Principle
Consider a piece of wood that is held below the surface of a liquid and then released .The wood comes to the surface immediately.
- When a piece of wood is immersed in a fluid, then it floats due to the buoyant force or upthrust.
- Upthrust is the upward force that enables the object to float or at least seem lighter
- The upthrust is greater than the weight of the wood, that is why the wood is pushed to the surface
Archimedes Principle (the law of buoyancy)
It states that:
โWhen a body is partially or totally immersed in a fluid it experiences an upthrust which is equal to the weight of the fluid displacedโ