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11. Starting from rest, a wheel undergoes constant angular acceleration
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# Question :   11. Starting from rest, a wheel undergoes constant angular acceleration : 2102151

11. Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At what time after the start of rotation does the wheel reach an angular speed equal to its average angular speed for this interval?

A. 0.25 T

B. 0.50 T

C. 0.67 T

D. 0.71 T

12. Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At which of the following times does the average angular acceleration equal the instantaneous angular acceleration?

A. 0.50 T

B. 0.67 T

C. 0.71 T

D. all of the above

13. A Ferris wheel starts at rest and builds up to a final angular speed of 0.70 rad/s while rotating through an angular displacement of 4.9 rad. What is its average angular acceleration?

14. A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 7.0-s interval at a rate of 0.040 rad/s2. What is its angular speed after this 7-s interval?

15. A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s, accelerates over a 7.00-s interval at a rate of 0.040 0 rad/s2. What angular displacement does the Ferris wheel undergo in this 7-s interval?