When a Fan Is Turned Off, Its Angular Speed Decreases $0,74 \mathrm { rad } / \mathrm { s } ^ { 2 }$

question 95

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) \(0,74 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• B) \(1.2 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• C) \(11 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• D) \(0.37 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• E) \(0.86 \mathrm { rad } / \mathrm { s } 2\)

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