A spinning disk of mass 50 kg and radius 025m is rotating, Physics

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A spinning disk of mass 50 kg and radius 025m is rotating

A spinning disk of mass 5.0 kg and radius 0.25m is rotating about an axis through its center at 400 rev/min. a.) What is the angular velocity of the disk in rad/s? b.) What is the moment of inertia of the disk? c.) If it accelerates at a constant rate to 900 rev/min in 8 sec, what is its angular acceleration? d.) What constant torque is required to produce this acceleration? e.) When it reaches that speed, what is its kinetic energy? f.) When it reaches that speed, what is its angular momentum?

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