🌊 Fun Activity on Archimedes’ Principle
Concept: Loss in weight of a body when immersed in water = Weight of water displaced.
🎯 Aim
To show that when a solid is immersed in water, it appears lighter and the loss in weight equals the weight of water displaced.
🧪 Materials Needed
- A spring balance
- A solid object (stone or metal block)
- A beaker filled with water
- An overflow can (or large beaker)
- A measuring cylinder
📝 Procedure
- Suspend the solid object using a spring balance. Note its weight in air. 👉 Call this W₁.
- Now slowly immerse the object completely in the water, without touching the sides. 👉 Note its new weight shown by the spring balance. 👉 Call this W₂.
- The loss in weight = (W₁ – W₂).
- While immersing, the displaced water will overflow. Collect it in a measuring cylinder and find its weight. 👉 Call this Wᵂ.
📊 Observation Table
| Condition | Reading (g or N) |
|---|---|
| Weight of solid in air (W₁) | ……… |
| Weight of solid in water (W₂) | ……… |
| Loss in weight (W₁ – W₂) | ……… |
| Weight of displaced water (Wᵂ) | ……… |
✅ Result
The loss in weight of the body (W₁ – W₂) is equal to the weight of displaced water (Wᵂ). Thus, Archimedes’ Principle is verified! 🎉
🌈 Rainbow Mindmap (Archimedes’ Principle)
Archimedes’ Principle
- Definition: Loss in weight = Weight of displaced liquid
- Key Terms: Buoyant force, Apparent weight, Upthrust
- Applications: Ships float
- Applications: Submarines
- Applications: Hydrometers
- Applications: Hot air balloons
- Formula: Loss in weight = W₁ – W₂ = Weight of displaced liquid
