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Physics
When a disc rotates with uniform angular velocity, which of the following is not true?
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Q. When a disc rotates with uniform angular velocity, which of the following is not true?
System of Particles and Rotational Motion
A
The sense of rotation remains same
20%
B
The orientation of the axis of rotation remains same
15%
C
The speed of rotation is non-zero and remains same
21%
D
The angular acceleration is non-zero and remains same
45%
Solution:
When a disc rotates with uniform angular velocity, angular acceleration of the disc is zero. Hence, option is not true.