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HC Verma - Concepts of Physics Part 1

10. Rotational Mechanics

1. Introduction to Physics
2. Physics and Mathematics
3. Rest and Motion : Kinematics
4. The Forces
5. Newton’s Laws of Motion
6. Friction
7. Circular Motion
8. Work and Energy
9. Centre of Mass, Linear Momentum, Collision
10. Rotational Mechanics
11. Gravitation
12. Simple Harmonic Motion
13. Fluid Mechanics
14. Some Mechanical Properties of Matter
15. Wave Motion and Waves on a String
16. Sound Waves
17. Light Waves
18. Geometrical Optics
19. Optical Instruments
20. Dispersion and Spectra
21. Speed of Light
22. Photometry

Short Answer

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Q. 51

A wheel of moment

Class 11th HC Verma - Concepts of Physics Part 1 10. Rotational Mechanics

Answer :

Given:

Radius of the wheel (r)= 20.0 cm

Moment of inertia (I₁) = 0.500 kg-m²

Angular speed (ω₁) = 20.0 rad/s

Mass of the particle it picks (m)= 200g

New angular speed (ω₂) =?

Since external torque is zero

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