Question

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

Answer 1

Answer: (D)

When a disc rotates with uniform angular velocity, angular acceleration of the disc is zero. Hence, option is not true.