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An electric fan is turned off and its angular velocity decreases uniformly from 550 rev min to 200 in rev per min time interval of length 4.50 sec Find the angular acceleration in meters per sec sq?
Dtrim001
(550 - 200) rev per minute = -350 rev per minute / 60 sec per minute = (-35/6 rev per second) change in angular velocity
Angular acceleration = (change in angular velocity) / (time for the change) =
(-35/6 rev per second) x (2 pi radians per rev) / 4.5 seconds = -8.1449 radians per second2
("Meters per sec sq" can't be a unit of angularacceleration, since angles can't be measured in meters.)
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∙ 14y ago
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