KinematicsUniformly Accelerated Motion (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 6  10 of 23
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Question number: 6
» Kinematics » Uniformly Accelerated Motion
Question
A grind stone starts from rest and has a constantangular acceleration of 6.0 rad/sec2. The angular displacement and angular velocity, after 4 sec. will respectively be
Choices
Choice (4)  Response  

a.  32 rad, 64 rad/s 

b.  48 rad, 24 rad/s 

c.  64 rad, 32 rad/s 

d.  16 rad, 32 rad/s 

Question number: 7
» Kinematics » Uniformly Accelerated Motion
Question
The angular velocity of a particle is given by co = 5t  3t ^{2} + 1, the time when its angular acceleration decreases to be zero will be 
Choices
Choice (4)  Response  

a.  0.25 sec 

b.  1.2 sec 

c.  0.83 sec 

d.  25 sec 

Question number: 8
» Kinematics » Uniformly Accelerated Motion
Question
The magnitude of the linear acceleration of the particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4 s, will be –
Choices
Choice (4)  Response  

a.  2.5 π ^{2} cm/s ^{2} 

b.  2.5π cm/s ^{2} 

c.  5 π cm/s ^{2} 

d.  5 π ^{2} cm/s ^{2} 

Question number: 9
» Kinematics » Uniformly Accelerated Motion
Question
The total mass of an elevator with a 80 kg man in it is 1000 kg. This elevator moving upward with a speed of 8 m/sec, is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be
Choices
Choice (4)  Response  

a.  78 N, 624 N 

b.  624 N, 78 N 

c.  624 N, 7800 N 

d.  7800 N, 624 N 

Question number: 10
» Kinematics » Uniformly Accelerated Motion
Question
A force produces an acceleration of 5 m/s ^{2} in a body and same force an acceleration of 15 m/s ^{2} in another body. The acceleration produced by the same force when applied to the combination of two bodies will be –
Choices
Choice (4)  Response  

a.  0.667 m/s ^{2} 

b.  3.75 m/s ^{2} 

c.  20 m/s ^{2} 

d.  10 m/s ^{2} 
