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System of Particles & Rotatory Motion — Syllabus

Telangana Open School (TOSS) · Class 12 · Physics

What System of Particles & Rotatory Motion covers in Telangana Open School (TOSS) Class 12 Physics: 4 topics, for the 2026-27 session.

49 questions29 flashcards15 formulas & key relations5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Physics · 2026-27

Topics in System of Particles & Rotatory Motion

1

Rigid Body and Centre of Mass

  • A rigid body is an ideal object where the distance between any two particles remains constant during motion.
  • Centre of mass (CM) is the point where the entire mass of a system appears to be concentrated.
  • The CM moves as if all external forces act directly on it, simplifying motion analysis.
2

Rotational Motion and Moment of Inertia

  • Rotational motion involves all particles moving in concentric circular paths around an axis.
  • Moment of inertia (I) is rotational analogue of mass in linear motion.
  • I depends on mass distribution and axis of rotation.
3

Torque, Angular Momentum and Conservation

  • Torque is rotational analogue of force; causes angular acceleration.
  • Torque = r × F; magnitude is rF sinθ.
  • Angular momentum (L) is rotational analogue of linear momentum.
4

Combined Translational and Rotational Motion

  • Rolling motion combines translation of CM and rotation about CM.
  • For pure rolling without slipping, v = Rω and a = Rα.
  • Total kinetic energy = translational KE + rotational KE.

Key Concepts

Central concept: Rotational and Translational Motion of Rigid Bodies

Rigid BodyCentre of Mass (CM)Centre of Gravity (CG)Translational and Rotational MotionMoment of InertiaTorque and CoupleAngular MomentumEquations of Rotational Motion

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Frequently Asked Questions

What are the important topics in System of Particles & Rotatory Motion for Telangana Open School (TOSS) Class 12 Physics?
Key topics in System of Particles & Rotatory Motion include Rigid Body and Centre of Mass, Rotational Motion and Moment of Inertia, Torque, Angular Momentum and Conservation, Combined Translational and Rotational Motion. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise System of Particles & Rotatory Motion for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 49 practice questions on System of Particles & Rotatory Motion. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All Telangana Open School (TOSS) Class 12 Physics Syllabus

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