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A solid disc is recast into a thin walle...

A solid disc is recast into a thin walled cylinder of same radus. Which will have larger moment of inertia ?

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The thin walled hollow cylinder will have larger moment of inertia as its mass is located at comparatively larger distance from the axis of rotation.
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PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-SHORT ANSWER QUESTIONS
  1. Is radius of gyration of a body constant quantity ?

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  2. Speed of rotation of a body affects the radius of gyration of the body...

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  3. A solid disc is recast into a thin walled cylinder of same radus. Whic...

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  4. Two satellites of equal masses, which can be considered as particles a...

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  5. In which of the following cases shown Fig. it is most difficult to rot...

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  6. In first figure a meter stick, half of which is wood and the other hal...

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  7. Two circular discs A and B of equal masses and thicknesses. But are ma...

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  8. The radius of gyration of an uniform rod of length L about an axis pas...

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  9. Why there two propellers in a helicopter ?

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  10. A solid wooden sphere rolls down two different inclined planes of the ...

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  11. Using expressisions for power and kinetic energy of rotational motion,...

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  12. A thin uniform circular disc of mass M and radius R is rotating in a h...

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  13. Is angular momentum of a system always conserved ?

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  14. A flywheel is revolving with a constant angular velocity. A chip of it...

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  15. Why are not able to rotate a wheel by pulling or pushing along its rad...

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  16. Explain why the speed of a whirl wind in a tornado is alarmingly high ...

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  17. State the two theorems of moment of inertia.

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  18. Explain the physical significance of moment of inertia and radius of g...

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  19. Obtain expression for K.E. of rolling motion.

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  20. State the laws of rotational motion.

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