PhysicsVector QuantityNCTB পদার্থবিজ্ঞান অধ্যায় ৩ (বল) / মহাকর্ষ ও অভিকর্ষ
Gravitation
Bengali: মহাকর্ষ•Pronunciation: গ্র্যাভিটেশন•Symbol: F_g \text{ ও } G
Standard Definition:
The universal attractive force mutually exerted between any two masses across spacetime.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
Gravitational constant unit: N*m^2/kg^2(মহাকর্ষীয় ধ্রুবকের একক: $N\cdot m^2/kg^2$)
Dimensional Analysis
CGS Unit
dyn*cm^2/g^2
📖 Physical Concept & Comprehensive Explanation
Newton's law of universal gravitation states that every particle attracts every other particle with a force directly proportional to the product of their masses and inversely proportional to the square of the distance separating them.
🎯 High-Yield Revision Points
- ✓Universal constant G = 6.673 * 10^-11 N*m^2/kg^2.
- ✓Follows an inverse-square law with respect to separation distance.
- ✓Attraction between Earth and an object is specifically called gravity.
Use Online Solver for Gravitation
Compute step-by-step solutions, verify formulas, and plot interactive diagrams on biggan.me.
❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is the difference between gravitation and gravity?
Gravitation is the attractive force between any two masses in the universe. Gravity specifically denotes the gravitational pull between Earth and another body.