Multiple Choice
A ceiling fan is turned on and reaches an angular speed of 120 rev/min in 20 s.It is then turned off and coasts to a stop in an additional 60 s.The ratio of the average angular acceleration for the first 20 s to that for the last 60 s is which of the following?
A) 3
B) -3
C) 0.3
D) -0.3
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q50: A fan blade,initially at rest,rotates with a
Q51: Two hoops or rings (I = MR<sup>2</sup>)are
Q52: A uniform,horizontal beam of length 6.0 m
Q53: An object consists of a rod (of
Q54: A 0.30-m radius automobile tire rotates how
Q56: A 3.0-m rod is pivoted about its
Q57: A ceiling fan is turned on and
Q58: Calculate the linear speed due to the
Q59: A 0.20-m radius grinding wheel starts at
Q60: A uniform meterstick balances on a fulcrum