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A fan with a moment of inertia of 0.8 kg-m has a net torque of 2 m-N applied to it. How many rotations does

 

A fan with a moment of inertia of 0.8 kg-m has a net torque of 2 m-N applied to it. How many rotations does the fan go through in 7 seconds if it starts from rest?

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