Law of conservation of total mechanical energy

Friends I conducted this unusual experiment, which at first glance, as it may seem, refutes the law of conservation of energy. But this is not the case. The law of conservation of energy is also fulfilled in this case. The experiment shows us that the cone is moving up, in fact, the center of mass of the cone is moving down. It seems that the cone is moving up. Isn t it Physics cannot be deceived, you can deceive the audience, but not the nature of matter that creates these wonderful experiments. If y