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A gear speed is measured in revolutions per minute (r/min). The speed of a gear is represented by N.
a. How many revolutions does the gear turn in 20 minutes?
b. When the gear speed is reduced by 35 revolutions per minute, the speed is N - 35 r/min. How many revolutions does the gear turn in 4.25 minutes at the reduced speed?
We have to find the linear velocity of the rotating object, if it's known:
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