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Kinematics of Rotational Motion, Class 11 Physics NCERT Solutions

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1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
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1. Direction of linear velocity of a particle rotating in a circular motion is :

Your comments:

Question 1 of 20

2. A ball is under the effect of circular motion about a perpendicular axis with respect to the reference direction. The angular position (in radians) is given by the following function
8890_image001 .The angular position when angular velocity is zero is

Your comments:

Question 2 of 20

3. Let 19825_493f965b17f1e90d9c8381c8500ac576H and 19825_493f965b17f1e90d9c8381c8500ac576E respectively be the angular speeds of the hour hand of a watch and that of the earth around its own axis. Compare the angular speeds of the earth and hour hand of a watch.
5

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Question 3 of 20

4. The angular position of a particle (in radians), along a circle of radius 0.8 m is given by the function in time (seconds) by showimage. The linear velocity of the particle

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Question 4 of 20

5. All the points of a rigid body rotating about the given axis have same :

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Question 5 of 20

6. A mixer grinder rotates clockwise, its angular velocity will be :

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Question 6 of 20

7. Which of the following is not a unit of angular displacement?

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Question 7 of 20

8. In an equilateral triangle of length 6 cm , three masses m1= 40g , m2= 60g and m3= 60g are located at the vertices. The moment of inertia of the system about an axis along the altitude of the triangle passing through m1 is

CBSE_System_of_particle_13 

 

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Question 8 of 20

9. A CD accelerates uniformly from rest to 200 spins per minute in 8 seconds. If the rate of change of speed is constant, determine the instantaneous acceleration in rad/s2 .

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Question 9 of 20

10. A boy is playing with a tire of radius 0.5m. He accelerates it from 5rpm to 25 rpm in 15 seconds. The linear acceleration of tire is

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Question 10 of 20

11. The angular momentum of a body is 31.4 Js and its rate of revolution is 10 cycle per second. The momentum of inertia of the body about the axis of rotation is

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Question 11 of 20

12. A merry- go- round ( diameter 4.0 m ) starts from rest and uniformly accelerates until it rotates at 0.8 rev/min. This occurs in 11s. Once it has reached this rate , it rotates at 0.8 rev/min uniformly . Determine the angular acceleration

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Question 12 of 20

13. A demo CD, 8 cm in diameter, spins 200 rev/min. Determine its linear velocity in cm/s for a point 3 cm from the center.

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Question 13 of 20

14. The Equations of Rotational Motion are

A. showimage (1)B. 8892_image006C. 8892_image006D. showimage (3)

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Question 14 of 20

15. Rotational analogue of force is :

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Question 15 of 20

16. A wheel rotates with a constant acceleration of 2.0 rad/s2 . If the wheel starts from rest, the number of revolutions it makes in the first ten seconds will be approximately:

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Question 16 of 20

17. The angular velocity of a second hand of a clock is :

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Question 17 of 20

18. A car is decelerating uniformly from velocity v1 to velocity v2 while getting displaced by s. If the diameter of the wheel is d, the angular acceleration of the wheel is
7

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Question 18 of 20

19. A smooth sphere A is moving on a frictionless horizontal plane with angular speed ω and center of mass velocity v. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are ωA and ωB respectively. Then

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Question 19 of 20

20. If n is the frequency of rotation of a body, its angular velocity is:

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Question 20 of 20

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