What is Gravitation ?

Gravitation is the force of attraction between objects with mass. It follows the law of universal gravitation, which states that the force is proportional to the product of their masses and inversely proportional to the square of the distance between them. Gravity is responsible for weight, keeping objects grounded, and governing celestial motion. The strength of the force depends on mass and distance. Understanding gravitation is crucial for studying planetary orbits and celestial behavior.

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Table of Content

1. Introduction

2. Newton's law of Gravitation

3. Properties of Gravitational Force

4. Acceleration Due to Gravity

5. Variation in g Due to Shape of Earth

6. Variation in g with Height

7. Variation in g with Depth

8. Variation in g Due to Rotation of Earth

9. Mass and Density of Earth

10. Inertial and Gravitational Masses

11. Gravitational Field

12. Gravitational Field Intensity for Different Bodies

13. Gravitational Potential

14. Gravitational Potential for Different Bodies

15. Gravitational Potential Energy

16. Work Done Against Gravity

17. Escape Velocity

18. Kepler’s Laws of Planetary Motion

19. Velocity of a Planet in Terms of Eccentricity

20. Some Properties of the Planet

21. Orbital Velocity of Satellite

22. Time Period of Satellite

23. Height of Satellite

24. Geostationary Satellite

25. Angular Momentum of Satellite

26. Energy of Satellite

27. Change in the Orbit of Satellite

28. Weightlessness

29. Weightlessness in a Satellite