Strong nuclear force
The nucleus of an atom is held together by the strong force. It binds protons to protons, neutrons to neutrons and protons to neutrons.
Therefore, the answer is Strong nuclear force.
it takes about 30 days for it to break down
no diagram was provided, but i'm guessing it's the one i've attached to my answer.
here, a mechanical force turns the rod. this generates an electric current in the coil, which powers the bulb.