I am given the moment of inertia of the system ( a fan) and the question asks for me to find the angular acceleration "after the fan is turned on, it takes t = 3.6 s and a total of 12 revolutions to accelerate up to its full speed" ? How I went about solving is that.. I simply converted the rev / sec into rad/ sec (20.94rads/sec). And used this as a final angular velocity, 0 as the initial velocity and the time (3.6) to calculate the acceleration, but I dont get the right answer and I don't know why ?(adsbygoogle = window.adsbygoogle || []).push({});

thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Help with the non uniform circular motion ?

**Physics Forums | Science Articles, Homework Help, Discussion**