Hesheng Group Reminder:

What is the tension related to?
1. Thickness of iron plate: the thicker the iron plate, the greater the tension;
2. Flatness of contact surface: the smoother the contact surface is, the greater the tension is, the uneven, and the tension is greatly reduced!
3. Pulling speed: static object with large pulling force; Shaking objects, small tension;
4. Stress direction: large vertical tension; The horizontal tension is small.
For example, if you suck 0.5mm thick smooth leather surface and 2mm thick rough iron plate surface, you will find that the suction force will be very different!

The magnet can only absorb iron, and other things don't. the magnetic force displayed by the adsorbed iron plate and the adsorbed iron skin is different. The magnetic force displayed by the magnet completely contacting the iron plate and the magnet only contacting a little iron is also different. Objects that absorb iron and mixed iron also exhibit different magnitudes of magnetism. The magnitude of suction is closely related to the iron content and thickness of the object being sucked, and the magnetic force in water is also different. For example, when fishing in water, it is recommended to buy Magnets with a diameter of more than 48 mm or larger. The larger the diameter, the better the suction. The same environment and different pulling forces are used.