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75mm (3") Bar Magnet

75mm (3") Bar Magnet

[4]   1 - Ratings

This 75mm blue & red painted bar magnet is ideal for doing magnetic repulsion & attraction experiments; only $0.95.

See our blog on Magnet Experiments for Kids for more information and ideas.



Related Products

SKU: 33544
Bar magnet, ferrite, 75x18x6.5mm, red/blue: N/S

PRICE BREAKS - The more you buy, the more you save.
Quantity1+10+ 100+ 
Price for each$0.95USD$0.85USD$0.65USD
Your savings- 10.53%31.58%

Quantity :

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Current Reviews: 1

If you need bar shaped magnets with greater holding or repelling force, see: neodymium magnet blocks.

Watch this video of the magnaprobe in action that shows how to identify a magnetic field around a bar magnet.



Repulsion Test

Two 75x18x6.5mm bar magnets were placed in contact with opposing poles (N:N). They were released & the distance caused by the repulsive force was measured.

Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average
46mm 44mm 43mm 42mm 44mm 44mm

Paperclip Pickup Test

Forty paper clips were placed in a 500ml beaker. A single 75x18x6.5mm ferrite bar magnet was dipped into the beaker to pick up as many paper clips as possible.

Type Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average
Uncoated Steel 19 18 21 28 22 22

Plastic Coated Steel

13 11 13 9 9 11

 

4 Stars 2017-04-20

Good strong magnet, not recommended for kids as they break easily when dropped.

-Indigo:
Yes, brittleness is their main drawback.

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