Rotational Motion (AIIMS (All India Institute of Medical Sciences) Physics): Questions 5  9 of 16
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Question number: 5
» Rotational Motion » Angular Momentum
Appeared in Year: 2004
Question
In an orbital motion, the angular momentum vector is – [AIIMS]
Choices
Choice (4)  Response  

a.  Parallel to the linear momentum 

b.  Along the radius vector 

c.  In the orbital plane 

d.  Perpendicular to the orbital plane 

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Question number: 6
» Rotational Motion » Concepts of Rotational Motion
Question
If the equation for the displacement of a particle moving on a circular path is given by , where is in radians and t in seconds, then the angular velocity of the particle after 3 s from its start is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 7
» Rotational Motion » Moment of Inertia
Question
Two rings of the same mass of 5 kg and radius 2 m are placed such that their centers are at a common point and their planes are perpendicular to each other. The moment of inertia of the system about an axis passing through the centre and perpendicular to the plane of one of the rings is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 8
» Rotational Motion » Concepts of Rotational Motion
Question
A particle moves on a circle of radius such that the distance covered on the circle varies with time according to the law, . What is the total acceleration of the particle at .
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 9
» Rotational Motion » Torque
Question
A force newton acts on a particle whose position vector with respect to origin O is Find the magnitude and direction of the torque.
Choices
Choice (4)  Response  

a.  Magnitude 21 Nm, direction along the negative z – axis 

b.  Magnitude 31 Nm, direction along the positive z – axis 

c.  Magnitude 21 Nm, direction along the positive z – axis 

d.  Magnitude 31 Nm, direction along the negative z – axis 

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