Rotational Motion (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 60  63 of 125
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Question number: 60
» Rotational Motion » Moment of Inertia
Question
Three rings each of mass M and radius R are arranged as shown in the figure. The moment of inertia of the system about YY’ will be,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 61
» Rotational Motion » Values of Moments of Inertia
Question
Five particles of mass 2 kg are attached to the rim of a circular disc of radius 0.1 m & negligible mass. Moment of inertia of this system about an axis passing through the center of the disc & perpendicular to its plane is,
Choices
Choice (4)  Response  

a.  0.1 kgm ^{2} 

b.  l kgm ^{2} 

c.  2 kgm ^{2} 

d.  0.2 kgm ^{2 } 

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Question number: 62
» Rotational Motion » Moment of Inertia
Question
Moment of inertia depends on,
(1) Distribution of particles
(2) Mass
(3) Radius of gyration
(4) Medium
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 3 are correct 

b.  1,2 and 3 are correct 

c.  2 and 4 are correct 

d.  1 and 2 are correct 

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Question number: 63
» Rotational Motion » Moment of Inertia
Question
Assertion (Ꭺ)
Radius of gyration of a body is a constant quantity.
Reason (Ꭱ)
The radius of gyration of a body about an axis of rotation may be defined as the root mean square distance of the particles of the body from the axis of rotation.
Choices
Choice (4)  Response  

a.  Ꭺ is false but Ꭱ is true 

b.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

c.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

d.  Both Ꭺ and Ꭱ are false 

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