When a Fan Is Turned Off,its Angular Speed Decreases from 10

question 21

Multiple Choice

When a fan is turned off,its angular speed decreases from 10 rad/s to 6.3 rad/s in 5.0 s.What is the magnitude of the average angular acceleration of the fan?

• A)0.86 rad/s²
• B)0.74 rad/s²
• C)0.37 rad/s²
• D)11 rad/s²
• E)1.2 rad/s²