Question: table I at un O Example 1: A fan is rotating at 90 rpm. It is then switched OFF. It stops after 21 e revolutions.

 table I at un O Example 1: A fan is rotating

table I at un O Example 1: A fan is rotating at 90 rpm. It is then switched OFF. It stops after 21 e revolutions. Calculate the time taken by it e. to stop assuming that the frictional torque of is constant

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