Rotational Motion Weightage in JEE Main 2026, Important Topics and Formulas
Soumya Tiwari3 Dec, 2025
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Rotational Motion Weightage in JEE Main is one of the important JEE Physics chapters. This is because this chapter comes up with regular questions every year. Students search for rotational motion weightage in JEE PDF download, rotational motion chapter weightage JEE, and rotational motion weightage in JEE Mains 2026, etc. to find out the number of questions from this chapter. This chapter is a scoring chapter as questions are based on formulas, concept, and simple applications. This chapter is very easy to attempt, if a student has clear basics.
Rotational Motion Weightage in JEE Main 2026
The JEE Mains Rotational Motion Weightage 2023-2025 has been consistent. On average, there are two questions per shift. Occasionally, it can increase to three questions. The nature of these questions is primarily torque, angular variables, moment of inertia, rolling motion, and conservation of angular momentum. A significant number of questions also blend rotational and translational motion concepts.
This trend clearly indicates that the JEE mains rotational motion chapter weightage is consistent and deserves full preparation for the 2026 exam as well.
| Rotational Motion Chapter Trend Table | |||||
| Topic | Subtopic | 2023 | 2024 | 2025 | Avg. Qs |
| Angular Variables | θ, ω, α and relations | 1 | 1 | 1 | 1 |
| Torque & Angular Momentum | τ = r×F, L = Iω | 1 | 1 | 1 | 1 |
| Moment of Inertia | MOI, theorems | 1 | 0 | 1 | 0–1 |
| Rolling Motion | pure rolling, incline | 1 | 1 | 1 | 1 |
| Rotational Dynamics | equations, energy | 0 | 1 | 1 | 0–1 |
| Total Questions | — | 4 | 4 | 5 | 4–5 |
Rotational Motion Importance Topics
The Rotational Motion Weightage in JEE Mains 2026 strongly depends on a few key topics. When students learn these topics well, they can easily solve almost all questions asked in the exam.
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Angular variables: θ, ω, α and relations with linear motion.
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Torque and angular momentum.
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Moment of inertia (MOI) of standard bodies.
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Parallel and perpendicular axis theorems.
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Rolling motion (pure rolling, rolling without slipping).
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Kinetic energy in rotational motion.
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Relation between torque and angular acceleration.
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Conservation of angular momentum.
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Rotational dynamics of rigid bodies.
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Combined translation + rotation motion.
Also Check: Rotational Motion JEE Notes PDF
Rotational Motion Important Formula
Rotational Motion is one of the scoring chapters in JEE. Many questions in rotational motion are directly from these formulas. These formulas will help you relate rotation with linear motion. Once you learn these formulas and concepts, questions become easy to solve. Here are the important formulas, students need to remember for JEE Mains.
1. Angular Motion Basics
Angular displacement is written as θ.
Angular velocity is ω = dθ/dt.
Angular acceleration is α = dω/dt.
2. Link Between Linear and Rotational Motion
v = rω
at = rα
ac = ω²r or v²/r
3. Torque Formula
τ = r × F
τ = Iα
4. Angular Momentum
L = Iω
dL/dt = τ
5. Kinetic Energy in Rotation
Rotational KE = ½ Iω²
Total KE in rolling = ½ Mv² + ½ Iω²
6. Moment of Inertia of Standard Bodies
Ring: MR²
Disc: ½ MR²
Solid sphere: 2/5 MR²
Hollow sphere: 2/3 MR²
Rod about center: 1/12 ML²
7. Axis Theorems
Parallel axis theorem: I = Icm + Md²
Perpendicular axis theorem: Iz = Ix + Iy
8. Rolling Motion Formula
v = rω
Acceleration of rolling body: a = g sinθ / (1 + k²/R²)
Also Check: Rotational Motion JEE Questions PDF
Rotational Motion Weightage in JEE Main PDF
Most students search for Rotational motion weightage JEE Main. Students can now download a PDF for easy access to trends and formulas. A basic PDF allows them to revise the entire chapter in one place. Students can use it for quick revision just before the exam or during mock tests.