A Ceiling Fan Has Five Blades, Each with a Mass

question 33

Multiple Choice

A ceiling fan has five blades, each with a mass of 0.34 kg and a length of 0.66 m. The fan is operating in its "low" setting at which the angular speed is 9.4 rad/s. If the blades can be approximated as uniform thin rods that rotate about one end, what is the total rotational kinetic energy of the five blades?

• A)35 J
• B)29 J
• C)23 J
• D)17 J
• E)11 J

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Definitions:

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