NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 2029  2032 of 2184
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Question number: 2029
Question
A flywheel of mass 25 kg has a radius of 0.3 m. What force should be applied tangentially to the rim of the flywheel so that it acquires an angular acceleration of 4 rad s ^{2}?
Choices
Choice (4)  Response  

a.  11.2 N 

b.  6.8 N 

c.  2.6 N 

d.  7.5 N 

Question number: 2030
» Rotational Motion » Moment of Inertia
Question
Assertion (Ꭺ)
If two different axes are at same distance from the centre of mass of a rigid body, then moment of inertia of the given rigid body about both the axes will always be the same.
Reason (Ꭱ)
From parallel axis theorem, where all terms have usual meaning.
Choices
Choice (4)  Response  

a.  Ꭺ is false but Ꭱ is true 

b.  Ꭺ is true but Ꭱ is false 

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

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

Question number: 2031
Question
The torque required to stop a wheel of moment of inertia from a speed of 40 rad s ^{1} in 10 s is,
Choices
Choice (4)  Response  

a.  8 ⨯ 10 ^{3} Nm 

b.  8 Nm 

c.  0.8 Nm 

d.  0.08 Nm 

Question number: 2032
» Rotational Motion » Concepts of Rotational Motion
Question
A solid sphere is rolling on a frictionless surface shown in figure with a transnational velocity v m/s. If sphere climbs up to height h then value of v should be
Choices
Choice (4)  Response  

a.  2gh 

b. 


c. 


d. 

