Multiple Choice
A ceiling fan is turned on and reaches an angular speed of 132 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 40 s.The ratio of the average angular acceleration for the first 20 s to that for the last 40 s is which of the following?
A) 6.6
B) 6.4
C) −0.15
D) −2.0
Correct Answer:
Verified
Correct Answer:
Verified
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