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When a celling fan is switched off, its ...

When a celling fan is switched off, its angular velocity falls to half while it makes `36` rotations. How many more rotations will it make before coming to rest ?

A

24

B

36

C

18

D

12

Text Solution

Verified by Experts

The correct Answer is:
D
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DISHA PUBLICATION-SYSTEM OF PARTICLES & ROTATIONAL MOTION -EXERCISE-1 : CONCEPT BUILDER
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  2. Three identical spheres, each of mass 1 kg are kept as shown in figure...

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  3. When a celling fan is switched off, its angular velocity falls to half...

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  4. The position Vectors of two identical particles with respect to the o...

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  5. In a bicycle the radius of rear wheel is twice the radius of front whe...

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  6. In a carbon monoxide molecule, the carbon and the oxygen atoms are sep...

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  7. Two paricle A and B initially at rest, move towards each other under m...

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  8. Five masses are placed in a plane as shown in figure. The coordinates ...

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  9. A small disc of radius 2cm is cut from a disc of radius 6cm. If the di...

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  10. The angular momentum of a system of particles is conserved

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  11. ABC is an equilateral triangle with O as its centre. vecF(1),vecF(2) a...

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  12. A particle of mass m is moving in a plane along a circular path of rad...

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  13. A stone of mass ied to a string of lengh l rotating along & a circular...

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  14. A force of -Fveck acts on O, the origin of the coordinate system. The ...

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  15. A particle of mass 0.2 kg is moving in a circle of radius 1 m with f=(...

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  16. A man stands in the middle of a rotating table which has an angular ve...

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  17. A wheel having moment of inertia 2 kg m^(2) about its vertical axis, r...

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  18. A smooth sphere A is moving on a frictionless horizontal plane with an...

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  19. A particle of mass m is moving in a circle of radius r. The centripeta...

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  20. A particle of mass 2 kg is moving such that at time t, its position, i...

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