📅 Published on: 27.12.2025
Rotational Motion JEE PYQ
Rotational motion holds a major weightage in JEE Mains Physics, testing your understanding of concepts like moment of inertia, torque, angular momentum, and rolling motion. Practicing Previous Year Questions (PYQs) strengthens concepts and builds numerical accuracy.
Download PDF – Rotational Motion PYQs
Rotational Motion PYQ JEE Mains
Solving rotational motion questions from JEE Mains helps students:
- Identify repeatedly asked concepts like rolling motion, torque, inertia
- Understand question framing and pattern
- Improve calculation speed for multi-step problems
Frequently asked areas in PYQs:
- Moment of Inertia & Parallel/Perpendicular Axis Theorem
- Torque & Angular Acceleration
- Energy in Rotational Systems
- Rolling Without Slipping
- Conservation of Angular Momentum
PYQ of Rotational Motion JEE
📍 Moment of Inertia
JEE repeatedly asks moment of inertia of basic & composite rigid bodies.
📍 Torque & Angular Acceleration
Torque relates force to rotational change:
τ = Iα
📍 Rolling Motion
Relation between translational and rotational motion:
v = Rω
📍 Rotational Kinetic Energy
Energy stored in rotation:
K = (1/2) I ω²
📍 Conservation Laws
Angular momentum remains conserved in absence of external torque.
Rotation PYQ JEE
Important formulas to revise through PYQs:
| Quantity | Formula |
|---|---|
| Angular Velocity | ω = dθ/dt |
| Angular Acceleration | α = dω/dt |
| Rolling Condition | v = Rω |
| Rotational Kinetic Energy | K = (1/2) Iω² |
| Torque | τ = r × F |
Strategy to solve rotational motion problems:
- Draw free body diagrams
- Break compound systems into simple bodies
- Apply parallel/perpendicular axis theorem carefully
- Use conservation laws wherever possible
Tips to Ace Rotational Motion in JEE Mains
- Practice at least 5–7 years of PYQs
- Memorize standard moment of inertia values
- Be fluent in unit conversions (rad, Hz, RPM)
- Solve numericals under time constraints
