Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 4

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IMPORTANT

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The radius of gyration of a solid sphere of radius $R$ about its tangential is

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Important Questions on Rotation

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 5

The ratio of the radii of gyration of a hollow sphere and a solid sphere of the same radii about a tangential axis is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 6

What is the moment of inertia of a solid sphere of density

ρ

and radius

R

about its diameter?

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 7

Let

I_{A}

and

I_{B}

be moments of inertia of a body about two axes

A

and

B

, respectively. The axis

A

passes through the centre of mass of the body but

B

does not

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 8

Three thin rods each of length

L

and mass

M

are placed along

x, y

and

z

-axis such that one end of each rod is at origin. The moment of inertia of this system about

z

-axis is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 9

The ratio of the radii of gyration of a circular disc and a circular ring of the same radii about a tangential axis perpendicular to plane of disc or ring is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 10

Figure represents the

M I

of the solid sphere about an axis parallel to the diameter of the solid sphere and at a distance

x

from it. Which one of the following represents the variations of

I

with

x ?

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 11

If

I_{1}

is the moment of inertia of a thin rod about an axis perpendicular to its length and passing through its centre of mass and

I_{2}

is the moment of inertia of the ring about an axis perpendicular to plane of ring and passing through its centre formed by bending the rod, then

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 9 - Rotation>Objective Problems>Q 12

A rod is placed along the line

y = 2 x

with its centre at the origin. The moment of inertia of the rod is maximum about