A private plane has a single propeller in front, which rotates in the clockwise sense as seen by the pilot. Flying horizontally, the pilot causes the tail rudder to extend out to the left from the plane's flight direction.

(a) If the plane is ultralight and the propeller is large, heavy, and rotates fast, what is the primary response of the plane?

(b) If instead the plane is heavy and the propeller is small, light, and rotates slowly, what then is the plane's primary response?