What torque on fan-portion is required to achieve liftoff

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A spinning flyer toy -a device which launches a fan-shaped object using torque -requires 2.9 s to reach an angular speed of 150 rev/min, and a rotational kinetic energy of 0.044 J in order to lift off of the base. What torque on the fan-portion is required to achieve liftoff?

Reference no: EM13981217

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