- #1
mattmannmf
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An electric fan is running on HIGH. After fan has been running of 13.2 minutes, the LOW button is pushed. The fan slows down to 98 rad/sec in 1.83 seconds. The blades of the fan have a radius of 0.62 meters and their deceleration rate is 42.3 rad/sec2.
a) What was the initial angular speed of the fan in rev/sec?
i am pretty sure i have to use the equation:
angular velocity^2=angular velocity^2+2(angular accel)(angular disp)
we have
final velocity= 98
angular accel= -42.3
angular disp= unknown, but we have radius.
time= 1.83
would the angular disp be 2pi?
a) What was the initial angular speed of the fan in rev/sec?
i am pretty sure i have to use the equation:
angular velocity^2=angular velocity^2+2(angular accel)(angular disp)
we have
final velocity= 98
angular accel= -42.3
angular disp= unknown, but we have radius.
time= 1.83
would the angular disp be 2pi?