Magnet stickers are things that are often used in daily life. We can use them to make our lives more convenient. As we all know, human memory is not omnipotent, and there are always things to forget. Therefore, we need to remind ourselves in a way. Then, we need to write down the things that need to be written down on the sticky notes. Because, in this way, we can stick it in a conspicuous position to remind us.
Magnet blackboards are often used in children’s schools. Because the magnet attracts a force perpendicular to the blackboard, the blackboard is rough. So, this creates friction to balance gravity. It is equivalent to pressing it with one hand. When you put a magnet on the blackboard, the magnet attracts the blackboard by its magnetic force. At this time, the magnet tends to fall. But because the magnet and the blackboard are strong and the blackboard is rough. Therefore, the magnet will receive an upward friction force. When this friction force is greater than or equal to the magnet’s own gravity, the magnet will not fall.
Sticky notes can help memorize. Therefore, it is generally used for office and telephone records. When you forget to do something, you can write on it and paste it to see it. Then, you can remember it again. We can also use it to leave a message to inform others. However, sometimes the sticky notes are easy to fall off if they are not securely attached. Therefore, using a magnet stick will make the note more firmly held. Mom can write on the sticky note to let the child remember to drink milk every morning. Then, stick this note on the refrigerator with a magnet. Therefore, children will find the words written on it when they approach the refrigerator.