Hang every weight on a peg so the beam is level. A weight pulls with its number times its distance from the middle, so the beam leans to the heavier side as you go. Drag a weight to a peg, or tap the weight and then tap a peg. Drag it back to the tray to take it off. The second puzzle hangs a small beam from one peg: it must be level too, and it pulls on the big beam with everything on it. Par is one move per weight.
Keys: Z undoes, Esc lets go of the weight.