PhysicsVector QuantityNCTB পদার্থবিজ্ঞান অধ্যায় ৫ (পদার্থের অবস্থা ও চাপ)
Archimedes' Principle & Buoyancy
Bengali: আর্কিমিডিসের নীতি ও প্লবতা•Pronunciation: আর্কিমিডিস প্রিন্সিপল অ্যান্ড বুয়ান্সি•Symbol: F_B \text{ বা } B
Standard Definition:
An upward buoyant force is exerted on a body immersed in a fluid, equal to the weight of the fluid that the body displaces.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
N (Newton)($N$ (নিউটন))
Dimensional Analysis
CGS Unit
dyn
📖 Physical Concept & Comprehensive Explanation
The net upward hydrostatic force exerted by a fluid on an immersed body is buoyancy. Archimedes' principle asserts that buoyancy equals the weight of displaced fluid (F_B = V*rho*g).
🎯 High-Yield Revision Points
- ✓Buoyant force = Volume displaced * fluid density * g.
- ✓Determines laws of floatation and sinking.
- ✓Heavy steel ships float because displaced water weight balances total ship weight.
Use Online Solver for Archimedes' Principle & Buoyancy
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❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is Buoyancy?
Buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object.