A Fan Rotating with an Initial Angular Velocity of 1000

question 27

Multiple Choice

A fan rotating with an initial angular velocity of 1000 rev/min is switched off. In 2 seconds, the angular velocity decreases to 200 rev/min. Assuming the angular acceleration is constant, how many revolutions does the blade undergo during this time?

• A)10
• B)20
• C)100
• D)125
• E)1200

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