JEE 2026 Gravitation One-Shot: Complete Concepts Explained

Gravitation is widely considered one of the most important chapters in the JEE Physics syllabus. It is a high-scoring topic because its concepts are largely formula-driven and have a significant overlap with Electrostatics, making it easier to master once you understand the behaviour of fields and potentials. This chapter covers 4 to 5% weightage of overall physics section in JEE Main.

This session is specifically designed by Saleem Ahmad Sir for students appearing for JEE Main in 2026. This content will help you maximize your score by leveraging your existing knowledge of Electrostatics.

The Comparative Study: Electrostatics vs. Gravitation

Most students view Gravitation as a brand-new, complex chapter. However, if you have a basic understanding of Electrostatics, Gravitation becomes significantly easier. Amit Sir describes Gravitation as a simplified version of Electrostatics.

The Formula Replacement Trick

To derive Gravitation formulas from Electrostatics, use the following substitutions:

Newton's Law of Gravitation

According to Newton, every point mass (m1) attracts every other point mass (m2) in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance (r) between them.

F = G * (m1 * m2) / r^2

The value of G is a constant: 6.674 \times 10^{-11} \text{ N}\cdot\text{m}^2/\text{kg}^2$

High-Yield Topics for JEE Main

Students must focus on these topics from Gravitation chapter to maximise their scores:

1. Superposition Principle

Just as we calculate the net force due to multiple charges in Electrostatics, we do the same for masses in Gravitation. For example, if three equal masses are placed at the corners of an equilateral triangle, the net force will be: 

2. Circular Motion under Mutual Attraction

A frequent JEE Main question involves multiple masses (e.g., four masses at the corners of a square) rotating in a circular path due to their mutual gravitational pull. To solve these, we equate the Net Gravitational Force to the Centripetal Force:

3. Null Point (Neutral Point)

The "Null Point" is the position where the net gravitational force on a test mass due to other masses becomes zero. Since mass is always positive, the null point for two masses is always located between them, closer to the smaller mass.

Conclusion

Gravitation is not just an important chapter for scoring; it deepens your understanding of how forces work in the universe. Amit Sir’s advice is to use your Electrostatics foundation to master this chapter in half the time.