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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

The sense of rotation remains same.

B

The 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
In uniform angular velocity
`omega`=constant
So angular acceleration
`alpha=(domega)/(dt)=0`
The correct option is (d).
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