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Rotation of a Rigid Body

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An electric ceiling fan is rotating about a fixed axis with an initial angular velocity of 0.200 rev/s . The angular acceleration is 0.911 rev/s^2 . Its blades form a circle of diameter 0.720m .

a) Through how many revolutions has the blade turned in the time interval 0.201s?
b) What is the tangential speed v_tan (in m/s) of a point on the tip of the blade at time 0.201s?
c) What is the magnitude of the resultant acceleration (in m/s^2)of a point on the tip of the blade at time 0.201s?

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