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When a ceiling fan is switched on, it ma...

When a ceiling fan is switched on, it makes 10 rotations in the first 3 seconds. Assuming a uniform angular acceleration, how many rotation it will make in the next 3 seconds?

A

10

B

20

C

30

D

40

Text Solution

Verified by Experts

The correct Answer is:
C
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ERRORLESS -ROTATIONAL MOTION-Practice Problems (Problems based on angular displacement, velocity and acceleration)
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  2. The angula speed of a fly-wheel making 120 revolutions /minute is :

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  3. A body starting from rest gains an angular speed of 540 r.p.m in 6 sec...

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  4. A car is moving at a speed of 72 km//h. The diameter of its wheels is ...

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  5. A wheel is rotating at 900 rpm about its axis. When the power is cut o...

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  6. A particle P is moving in a circle of radius r with a uniform speed u....

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  7. Two particles having mass 'M' and 'm' are moving in a circular path ha...

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  8. A ody is in pure rotation. The linear speed v of a particle, the dista...

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  9. A strap is passing over a wheel of radius 30 cm. During the time the w...

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  10. A particle starts rotating from rest. Its angular displacement is expr...

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  11. The planes of two rigid discs are perpendicular to each other. They ar...

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  12. A sphere is rotating about a diameter

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  13. A rigid body rotates about a fixed axis with variable angular velocity...

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  14. When a ceiling fan is switched on, it makes 10 rotations in the first ...

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  15. When a ceiling fan is switched off, its angular velocity reduces to 50...

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  16. Let vecA be a unit vecrtor along the axis of rotation of a purely rota...

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