A Solid Cylinder of Mass M = 3 Kg and Radius

Multiple Choice

A solid cylinder of mass m = 3 kg and radius r = 12 cm is initially rotating about its central axis with angular frequency $\omega$ = 25 radians/s.How many revolutions does it make after a retarding force of 0.5 N is applied to the outer surface?

A) 0.018 rev
B) 0.11 rev
C) 0.036 rev
D) 0.0090 rev
E) 0.072 rev