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A ring and a circular disc of different ...

A ring and a circular disc of different materials have equal masses and equal radii. Which one will have a larger moment of inertia about an axis passing through its centre of mass perpendicular to its plane ?

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A ring has a larger moment of inertia because its entire mass is concentrated at the rim at maximum distance from the axis.
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PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-VERY SHORT ANSWER QUESTIONS
  1. What is radius of gyration of a soild sphere of mass m and radius r ab...

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  2. On what factors does the radius of gyration of a body depend ?

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  3. A ring and a circular disc of different materials have equal masses an...

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  4. A disc of metal is melted and recast in the from of a soild sphere. Wh...

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  5. What are the units and dimensions of moment of inertia ? Is it a vecto...

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  6. What is rotational analogure of mass of a body ?

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  7. State the two theorems of moment of inertia.

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  8. What is moment of inertia of a solid sphere about its diameter ?

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  9. What is the moment of inertia of a hollow sphere about an axis passing...

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  10. What are the factors on which moment of inertia of a body depend ?

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  11. Is radius of gyration of a body constant quantity ?

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  12. There are two spheres of same mass and same radius, one is solid and o...

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  13. Two solid spheres of the same are made of metals of different densitie...

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  14. Name the rotational analogue of force. What are its units ?

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  15. A cannot ball and a marble ball roll from rest down an incline. Which ...

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  16. Can a body in translatory motion have angular momentum ? Explain.

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  17. Why spin angular velocity of a star is greatly enhanced when it collap...

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  18. Fill in the blanks : (i) overset rarr(tau) = overset rarr(r ) xx … (...

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  19. How are torque and angular momentum related ?

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  20. Complete the statement : Angular momentum of a particle is equal to tw...

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