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When a disc rotates with uniform angular...

When a disc rotates with uniform angular velocity, which of the following is not true ?

A

Some of rotation remains same

B

Orientation of the axis of rotation remains same.

C

The speed of rotation is non-zero and remains same

D

The angular acceleration is non-zero and remains same.

Text Solution

Verified by Experts

The correct Answer is:
D
`alpha =(domega)/(dt)`, given w = constant.
Hence, `alpha =0`
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CBSE COMPLEMENTARY MATERIAL-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS
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  2. When a disc rotates with uniform angular velocity, which of the follow...

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  4. A circular disc of radius R is removed from a bigger circular d...

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  10. Moment of inertia of a body does not depend on

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  12. What is the ratio of the moments of inertia of two rings radii r and n...

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  13. Two rings of radius R and nR made of same material have the ratio of m...

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  14. The moment of inertia of a ring about one of its diameters is I.What w...

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  15. If a person standing on a rotating disc stretches out his hands, the a...

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  17. A solid sphere of radius 'r' is rolling with velocity V on a smooth pl...

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  18. Two bodies have their moments of inertia I and 2 I respectively about ...

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