Gravitation

Universal law of gravitation, orbits, satellites and gravitational potential energy.

1.Introduction to Gravitation

A simple introduction to gravitation and why objects attract each other.

2.Gravity and Gravitational Force

Learn how gravity works and how every object in the universe pulls every other object.

3.Universal Law of Gravitation

Understand Newton’s universal law of gravitation in simple and beginner-friendly language.

4.Gravitational Constant (G)

Know what the gravitational constant is, why it is important, and its role in gravitational force.

5.Mass and Weight

Learn the difference between mass and weight with easy examples.

6.Acceleration Due to Gravity (g)

Understand why objects fall towards Earth with acceleration and how the value of g changes.

7.Motion of Objects Under Gravity

Study how objects move when they fall freely under the effect of gravity.

A simple explanation of free fall when gravity is the only force acting on an object.

9.Escape Velocity

Understand the minimum speed needed to escape Earth’s gravitational pull.

10.Satellites and Orbits

Learn how satellites move around planets and why they stay in orbit.

11.Geostationary and Polar Satellites

Understand the difference between geostationary and polar satellites with simple examples.

12.Gravitational Potential Energy

Learn how an object gains energy due to its position in a gravitational field.

13.Gravitational Potential and Gravitational Field

An easy explanation of gravitational potential and the field around a mass.

14.Kepler’s Laws of Planetary Motion

Understand Kepler’s three laws that describe how planets move around the Sun.

15.Weightlessness

Learn why astronauts feel weightless in space even though gravity still acts on them.