# MAGNETIC LEVITATOR

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Magnetic levitation, maglev, is a method by which an object is suspended or floated in the air with no support other than magnetic fields.

The fields are used to counteract the gravitational pull and any other counter acceleration. Magnetic levitation is applicable in maglev trains (and future cars), wind turbines and for products display.

Materials Needed

• Cardboard
• Syringe
• Measuring rulers
• Rubber
• Magnet
• Nail
• Can
• Glue

Tools Needed

• Scissors
• To use these tool, adult supervision is required for children under the age 8

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## Step 1: Attaching the Pillars to the Box

Materials

• Box (Length- 25cm, Width- 20cm and Height- 5cm)
• Two measuring rulers

Step

• Glue the rulers at the center of the width of the box as shown in the picture

## Step 2: Making the Slab

Materials

• Two measuring rulers
• Two rubbers (Length- 4cm, width- 2.5cm)
• One rubber (Length- 4cm, width- 5cm) with a hole of 1.5 cm diameter at the center
• One syringe

Steps

• Glue the rubbers in-between the rulers as arranged in the picture. Ensure that the arrangement is centralize and does not exceed 25cm
• Insert the syringe into the hole of the middle rubber

## Step 3: Attaching the Slab to the Pillars

Materials

• One round rubber of 7.5cm diameter
• One round magnet

Steps

• Glue the magnet onto the round rubber
• Centrally glue the rubber onto the syringe
• Glue the slab in- between the pillars

## Step 4: HOW IT WORKS

Any metallic object will levitate at a maximum point where the magnetic field is balanced with the gravitational pull and other forces like air resistance.

Just hold down any metallic object in the levitator, adjust the magnet to the point where the object is suspended as shown in the pictures.

In the case of the can, just hold it down on its vertex.

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## 8 Discussions

Two won’t work. You can’t hold something between two constant magnetic fields, one will always overcome the other. See Earnshaw’s Theorem for more information.

For multiple magnets to work one, usually the lower, uses multiple electromagnets, Hall sensors and a simple circuit to quickly switch the electromagnets to balance the forces.

Hey umm are the diametre and the measurements have to be taken exactly as mentioned ?

Hey umm are the diametre and the measurements have to be taken exactly as mentioned ?

I have tried it with one magnet and its work properly in my case. Such a cool and simple project. THANKS