Intention
Magnetic lifters work on the principle of electromagnetism.
Large lifts are used to move heavy iron and steel pieces from one place to another. Let's learn how to make a modern magnetic lifter model.
Concept
Generally, a magnet attracts elements such as iron, steel and
nickel, but its attraction is low. The attraction of an electromagnet is high.
When an electric current flows through a conductor, electromagnetic induction
takes place. Electromagnetic lifters are made based on this principle.
When an electric current is passed through a large conductor, it becomes an
electromagnet. The electromagnet is made to be lifted depending on the object's size.
Materials needed
Copper wire
Two pieces of heavy cardboard
Scissors
Two U-pin clips
Rope
Pencil
An iron bolt about an inch long
A cardboard box with one side open
Two paper clips
A cotton reel
A 4.5-volt battery
Making process
First, wind about 50 turns of copper wire around the bolt.
Remember that the strength of an electromagnet increases with the number of
turns. Leave two long pieces at each end.
Now make small holes near each end of the two cardboard
pieces and stick them inside the box with the help of paper clips.
Place the cotton relay between the cardboard pieces. To do
this, straighten a paper clip and push it through the holes in the cardboard
and through the centre of the cotton reel. Bend the ends of the paper clip to
keep the cotton relay from moving. Make a handle by attaching a bent paper clip
to the end of a pencil with tape.
Make two holes in the cardboard and push the pencil through
the two holes. Tie one end of the rope around the electromagnet. Place the rope
on the cotton reel and tie the other end to the pencil. The electromagnet
should move up and down as you turn the pencil.
Now connect the untied ends of the electromagnet to the
battery through a switch. The weight lifter is ready to use. To use the weight
lifter, place very small pieces of iron under the electromagnet. When you
switch it on, the bolt becomes a magnet and the iron pieces stick to it.
When you turn the pencil, the pieces will rise up. When you
want to put these iron pieces down, switch off the electromagnet and the pieces
will fall down.
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