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

Question

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

Quizplus · Accepted Answer

The Answer of 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

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