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Two small spheres of mass 5kg and 15 kg ...

Two small spheres of mass `5kg` and `15 kg` are joined by a rod of length `0.5 m` and of negligible mass. The `M.I.` of the system about an axis passing through centre of rod and normal to it is

A

`10 kgm^(2)`

B

`1.25 kgm^(2)`

C

`20 kgm^(2)`

D

`8 kgm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`I=mr^(2) `
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - II (H.W)
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  2. The mass of a thin circular plate is M and its radius is R. About an a...

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  3. Two small spheres of mass 5kg and 15 kg are joined by a rod of length ...

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  4. Ratio of densities of materials of two circular discs of same mass and...

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  9. Three point masses m(1),m(2),m(3) are placed at three corners of an ...

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  10. A circular disc of radius R and thickness R//6 has moment of inertia I...

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  18. A ball of mass 1 kg is projected with a velocity of 20sqrt(2) m/s ...

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  19. A uniform sphere of mass m , radius r and moment of inertia I ab...

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  20. When 200 J of work is done on a fly wheel its frequency of rotation in...

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