posted by Jeff .
2. An electric fan having a radius of 0.5 m is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 83.8 rad/s in 17.5 s. the deceleration is 42.0 rad/s2. Determine
a) The initial angular speed of the fan
b) the linear speed of a point on the end of the blade when it was on HIGH
c) How many revolutions it had during the time