Rotational Motion (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 99  103 of 125
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Question number: 99
» Rotational Motion » Angular Momentum
Question
A uniform rod of length 2L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 100
» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion
Question
The angular velocity of a body is . A torque acts on it. The rotational power is,
Choices
Choice (4)  Response  

a.  29 W 

b.  27 W 

c.  23 W 

d.  25 W 

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Question number: 101
» Rotational Motion » Moment of Inertia
Question
The moment of inertia of a circular ring about an axis passing through its center and normal to its plane is 200 gm ⨯ cm ^{2}. Then moment of inertia about its diameter is,
Choices
Choice (4)  Response  

a.  400 gm ⨯ cm ^{2} 

b.  100 gm ⨯ cm ^{2} 

c.  200 gm ⨯ cm ^{2} 

d.  300 gm ⨯ cm ^{2} 

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Question number: 102
» Rotational Motion » Rotational Kinetic Energy
Question
A sphere is rolling without slipping on a horizontal plane. The ratio of its rotational kinetic energy and translation kinetic energy is,
Choices
Choice (4)  Response  

a.  2: 9 

b.  2: 3 

c.  2: 5 

d.  2: 7 

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Question number: 103
» Rotational Motion » Moment of Inertia
Question
From a circular disc of radius R and mass 9 M, a small disc of radius is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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