It cannot be calculated just like that, because it depends on the shape of the iron and the magnet ( actually the shape of the airgap ).Ankhen said:how strong do a magnet need to be to lift a mass of 75 kg iron 1 meter straigth up in 1 second.
Hi Hesch and thanksHesch said:It cannot be calculated just like that, because it depends on the shape of the iron and the magnet ( actually the shape of the airgap ).
So correct answers could be 1T or 100T, depending on the shapes.
The attraction is not due to some "magnetic poles" inside the magnet, but due to magnetic energy density in the airgap between magnet and iron, which is:Ankhen said:Can you explaine it a little more
Hesch said:The attraction is not due to some "magnetic poles" inside the magnet, but due to magnetic energy density in the airgap between magnet and iron, which is:
Edens = ½*B*H [ J/m3 ].
Thus the energy: E = Edens*(volume of airgap) = Edens*(cross section area)*(width) of airgap = Edens*A*s.
The force: F = dE/ds = Edens*A.
Is the width of the airgap 1m in the starting position, or are magnet/iron closed up all the way ?
Say that the total area, A = 0.1m2, thenAnkhen said:Can you calculate it with both airgap 1m and with the magnet/iron closed up.
PS: You will need about 216000 ampere-windings by a distance = 1m ( × 2 airgaps ).Hesch said:Then calculate the amount of ampere-windings needed
Magnet strength is typically measured in units of gauss or tesla. Gauss is the more commonly used unit for smaller magnets, while tesla is used for larger magnets.
The strength of a magnet is affected by its size, shape, and the materials used to make it. Additionally, the distance between the magnet and the object it is attracting also plays a role.
To calculate the strength of a magnet for lifting a specific weight, you will need to know the weight of the object, the distance between the magnet and the object, and the strength of the magnet. You can then use the formula F = (magnet strength * object weight) / (distance)^2 to determine the required magnet strength.
Neodymium magnets are the strongest type of permanent magnets and are commonly used for lifting objects. They have a high magnetic field strength and are available in various shapes and sizes.
Yes, you can increase the strength of a magnet for lifting by using multiple magnets together or by using a magnet with a higher magnetic field strength. However, it is important to consider safety precautions when handling strong magnets.