Question: A certain plastic fan blade has the same total mass and shape as a certain metal fan blade. However, the plastic fan blade is much

A certain plastic fan blade has the same total mass and shape as a certain metal fan blade. However, the plastic fan blade is much larger in radius than the metal fan blade. Which fan blade requires more torque to get it from motionless to 100 rad/s in two seconds? Are they the same, is no torque required, the metal blad or the plastic blade?

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