A 45-N Brick Is Suspended by a Light String from a 2.0-Kg

Multiple Choice

A 45-N brick is suspended by a light string from a 2.0-kg pulley. The brick is released from rest and falls to the floor below as the pulley rotates through 5.0 rad. The pulley may be considered a solid disk of radius 1.5 m. What is the angular speed of the pulley?

A) 17 rad/s
B) 15 rad/s
C) 9.4 rad/s
D) 8.1 rad/s
E) 7.3 rad/s