When a disc rotates with uniform angular velocity, which of the following is not true ?A. The sense of rotation remains sameB. The orientation of the axis of rotation remain sameC. The speed of rotation is non-zero and remains sameD. The angular acceleration is non-zero and remains same

When a disc rotates with uniform angular velocity, which of the follow

1.	When a disc rotates with uniform angular velocity, which of the following is not true ?A. The sense of rotation remains sameB. The orientation of the axis of rotation remain sameC. The speed of rotation is non-zero and remains sameD. The angular acceleration is non-zero and remains same
Answer» Correct Answer - D We know that angular acceleration `alpha=(d omega)/(dt)`, where `omega` is angular velocity of the disc given `omega=` constant `rArr alpha=(d omega)/(dt)=(0)/(dt)=0` Hence, angular acceleration is zero.

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When a disc rotates with uniform angular velocity, which of the following is not true ?A. The sense of rotation remains sameB. The orientation of the axis of rotation remain sameC. The speed of rotation is non-zero and remains sameD. The angular acceleration is non-zero and remains same

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