Gravitation

Short Definition

Gravitation is the force of attraction between any two masses in the universe.

Detailed Explanation

Gravitational force is a fundamental force of nature. It governs the motion of planets, moons, and satellites. Newton’s Law of Universal Gravitation describes the magnitude of this force and its dependence on mass and distance.

Newton’s Law of Gravitation

• F = G (m₁ × m₂) / r², where G is the gravitational constant
• Force is directly proportional to the product of masses
• Force is inversely proportional to the square of the distance between them

Key Concepts

• Acceleration due to gravity (g)
• Gravitational potential energy: PE = -G m₁ m₂ / r
• Orbits of planets and satellites

Importance

Understanding gravitation is essential for explaining planetary motion, tides, satellite launching, and astrophysics.