What is the angular acceleration of the grind stone

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A 10 cm radius grind stone spins at a constant 400 rotations per second. After turning off the motor, the grind stone takes 26 seconds to come to a stop.

What is the angular acceleration of the grind stone after the motor is turned off?

How many rotations does the grind stone make after the motor is turned off?

Reference no: EM13540998

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