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5 Jan 2018
9.10 .. An electric fan is turned off, and its angular velocity decreases uniformly from 500 rev/min to 200 rev/min in 4.00 S. (a) Find the angular acceleration in rev/s2 and the number of revo- lutions made by the motor in the 4.00-s interval. (b) How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in part (a)?
9.10 .. An electric fan is turned off, and its angular velocity decreases uniformly from 500 rev/min to 200 rev/min in 4.00 S. (a) Find the angular acceleration in rev/s2 and the number of revo- lutions made by the motor in the 4.00-s interval. (b) How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in part (a)?
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Elin HesselLv2
7 Jan 2018
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