Question

Q19 & 20 When a 3,.75-kg fan, having blades 28.5 em long,is turmed off, is angular speed decreases uniformly from 15.0 rad/s to 8.70 rad/s in 4.7 s. 19. What is the magnitude of the angular acceleration of the fan? A) 8.7 rad/s2 B) 0.7 rad/s? 1.34 rad/s 4.7 rad/s2 E) None of the above 20 Through what angle (in degrees) does it turn while it is slowing down during the 4.7 s? 23320 r940 )25000 D) 450° E) None of the above

Answer 1