If ' L ' is angular momentum and ' I ' is the moment of inertia then, L 2 2 I represents

rotational kinetic energy of a particle.

potential energy of a particle.

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A square frame $A B C D$ is formed by four identical rods each of mass and length $l$ . This frame is in $X$ - $Y$ plane such that side $A B$ coincides with $X$ -axis and side $A D$ along $Y$ -axis. The moment of inertia of the frame about $X$ -axis is

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Important Questions on Rotational Motion

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 68

Four point masses, each of value

m

, are placed at the corners of a square

A B C D

of side

l

. The moment of inertia of this system about an axis passing through

A

and parallel to

B D

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 69

Three identical uniform thin metal rods form the three sides of an equilateral triangle. If the moment of inertia of the system of these three rods about an axis passing through the centroid of the triangle and perpendicular to the plane of the triangle is

n

times the moment of inertia of one rod separately about an axis passing through the centre of the rod and perpendicular to its length, the value of

n

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 70

The moment of inertia of an uniform cylinder of length

l

and radius

R

about its perpendicular bisector is

I

. What is the ratio

\frac{l}{R}

such that the moment of inertia is minimum?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 71

' L'

is angular momentum and

' I'

is the moment of inertia then,

\frac{L^{2}}{2 I}

represents

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 72

A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the following physical quantities would remain constant for the sphere?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 73

A fly wheel is rotating with a definite angular velocity. Suddenly a fragment from its edge breaks-off and falls away. Its Moment of Inertia (M.I.)

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 74

When torque acting on a rotating body is zero, then which of the following remains constant?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 11 - Rotational Motion>Competitive Thinking>Q 75

Dimensions of angular momentum are

A square frame ABCD is formed by four identical rods each of mass and length l. This frame is in X-Y plane such that side AB coincides with X-axis and side AD along Y-axis. The moment of inertia of the frame about X-axis is

Important Questions on Rotational Motion

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A square frame $A B C D$ is formed by four identical rods each of mass and length $l$ . This frame is in $X$ - $Y$ plane such that side $A B$ coincides with $X$ -axis and side $A D$ along $Y$ -axis. The moment of inertia of the frame about $X$ -axis is