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About which axis would the moment of ine...

About which axis would the moment of inertia of a body be minimum ?

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About an axis passing through the centre of mass.
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The mass of a body cannot be considered to be concentrated at the centre of mass of the body for the purpose of computing its moment of inertia. For then the moment of inertia of every body about an axis passing through its centre of mass would be zero.

MODERN PUBLICATION-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-REVISION EXERCISES (Very Short Answer Questions Carrying 1 mark)
  1. What is the position of the centre of mass of a cubical or rectangular...

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  2. Can a body moving in a circular path be at equilibrium?

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  3. Why the bottom of a ship is made heavy?

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  4. Find the centre of mass of a uniform triangula lamina.

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  5. What can we conclude for the potential energy of a system in stable eq...

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  6. What is the physical significance of moment of inertia?

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  7. Does the moment of inertia of a body change with the speed of rotatio...

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  8. Does the moment of inertia of a rigid body change with the axis of rot...

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  9. Does the radius of gyration depend on the speed of the rigid body?

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  10. About which axis would the moment of inertia of a body be minimum ?

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

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  12. Two lenses one convex and one concave are of same mass and same radius...

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  13. A disc is recast into a hollow sphere of having half radius? How momen...

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  14. The angular momentum of a system of particles is conserved

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

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  16. Why there two propellers in a helicopter ?

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

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

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  19. About what axis would a uniform cube have its minimum moment of inerti...

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  20. What do you mean by angular impulse?

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