In this applet, the hand is chosen as the (noninertial) frame of observation. When the stick tends to fall to the front, the hand should accelerate forward in order to give a backward inertial force on the stick to stop its rotation, and vice versa.

To simulate a forward (backward) acceleration, click the fore (rear) part of the hand. Each click gives the stick an acceleration of a constant magnitude over the same period (i.e. same impulse). Use the right button of your mouse if you want a larger acceleration. Repeated clickings will result a larger effect.

Your goal is to keep the stick not falling down as long as possible.