Archimedes principle equation/ Law of buoyancy:
The mass of the liquid displaced is
Thus the weight of that displaced liquid is:
Weight = Mass x Acceleration due to fravity
Thus from Archimedes principle, we can write:
Apparent loss of weight = weight of water displaced =
Thus the Thrust force is,
The thrust force is also called the buoyant force because it is responsible for objects to float. Thus, this equation is also called the law of buoyancy.
Experiment to Prove Archimedes Principle:
- Take a mug filled with water to the brim and place it in an empty bowl.
- Now take any solid object and note its weight by measuring using a spring balance.
- Keep the object attached to the spring balance and submerge the object in the water making sure the spring balance is not submerged.
- Now, note down the weight shown by the spring balance.
- You will notice that it is less.
- Collect the water displaced into the bowl and weigh it.
- You will find that the weight of water will be exactly equal to the loss of weight of the object. This proves Archimedes’ principle.