An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.270 rev/s . the magnitude of the angular acceleration is 0.899 rev/s2 . both the the angular velocity and angular accleration are directed counterclockwise. the electric ceiling fan blades form a circle of diameter 0.740 m.
a. compute the fan's angular velocity magnitude after time 0.207 s has passed. b. through how many revolutions has the blade turned in the time interval 0.207 s from part a? c. what is the tangential speed vtan(t) of a point on the tip of the blade at time t = 0.207 s? d. what is the magnitude a of the resultant acceleration of a point on the tip of the blade at time t = 0.207 s?

A)0.456 rev/s

B) 0.075 rev

C) 1.06 m/s

D) 3.7 m/s²

Explanation:

Initial angular velocity = = 0.270 rev/s =  1.6965 rad/s

Angular acceleration = α = 0.899 rev/s/s = 5.64858 rad/s/s

Radius = r = 0.74/2 = 0.37 m

Time = t = 0.207 s

A) Final angular velocity is given by the equation

=

=1.6965 + (5.64858)(0.207) = 2.87 rad/s = 0.456 rev/s

B) No. of revolutions is calculated using the equation

= 0.472 rad  = 0.075 revolutions

C) v = r ω =(0.37)(2.87) = 1.06 m/s

D) Centripetal acceleration = = (0.37) (2.87)² =3.05 m/s²                                

Tangential acceleration =

= ( 0.37)(5.64858) = 2.08997 m/s²

Resultant acceleration =

= 3.697 m/s²

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.