In daily life, people often put some cute little things on the side of the refrigerator to decorate them. We all know that the reason these small objects can be attached to the refrigerator is that it has magnets. According to our experience, these magnets can be attached to the side of the refrigerator for a long time without any intervention, and it can even be said that they have been lost for decades.

　　 Then the question came. The magnets of SmCo Ring Magnets Company are fixed on the side of the refrigerator. The gravity of the earth pulls it down. Therefore, the magnet must have energy to overcome gravity. So where does its power come from? Let us first analyze the force state of the magnet. When the magnet is attached to the side of the refrigerator, it is in a static state. According to Newton's first law of motion, an object in a static state is subjected to zero external force.

After a simple analysis, we can conclude that in this state, the magnet will receive four forces, which are the electromagnetic force between the magnet and the side of the refrigerator (these are two forces), the electromagnetic force and the friction force on the side of the refrigerator , So that these four forces are opposite to each other and balanced with each other, so that the magnet is in a static state.

　　 Therefore, we can draw a conclusion that "the phenomenon that the magnet is attached to the side of the refrigerator and will not fall for decades" is a force balance phenomenon, which leads to this reason. In the final analysis, the phenomenon is the result of the competition between gravity and electromagnetic force. So where does the electromagnetic force of the magnets of Neodymium Disc Magnet supplier come from? Here, let’s talk about simple science.