The uniform 640-mm rod has a mass of 3 kg and is welded centrally to the uniform 160-mm-...

The uniform 640-mm rod has a mass of 3 kg and is welded centrally to the uniform 160-mm-radius circular disk which has a mass of 8 kg. The unit is given a spin velocity p = 60 rad/s in the direction shown. The axis of the rod is seen to wobble through a total angle of 30°. Calculate the angular velocity of precession and determine whether it is