To have a magnet that can be turned on and off.
Yes. There are huge electromagnets suspended from cranes that could do that.
Some objects that contain an electromagnet include electric motors, speakers, MRI machines, and doorbells. Electromagnets are also used in cranes, magnetic levitation trains, and particle accelerators.
A crane or junkyard crane uses an electromagnet to pick magnetic items up. The crane controls the electromagnet by using a a circuit that has a wire wrapped around a piece of metal that can be magnetized that's at the end of the crane's arm. When the circuit completes, the metal at the end of the cranes arm gets temporarily magnetized. When the current stops, the metal get demagnetized and can't pick things up anymore.
Because they can then lift the steel easily without having to put chains and lifting gear onto it.
The purpose of the electric cells in an electromagnet is to provide an electric current that generates a magnetic field when it flows through a coil of wire. This magnetic field allows the electromagnet to attract or repel nearby objects, making it useful in various applications such as in electric motors, transformers, and magnetic cranes.
The weight that an electromagnet crane can lift depends on its design and power. Small electromagnet cranes can lift a few hundred pounds, while larger industrial ones can lift tens of tons. It's important to consult the crane's specifications and limitations before attempting to lift objects.
The major projects that have made use of bridge cranes or overhead cranes include construction developments. Almost all paper mills in the world utilize bridge cranes. Demag Cranes and component was one of the first corporations to prosper from the use of bridge cranes as a result the company produced the world's first steam powered crane.
electromagnetically
No.
yes it does
swoops down
You should use a ferromagnetic material, such as iron or steel, to make an electromagnet. These materials have strong magnetic properties that are necessary for creating a powerful electromagnet.