How strong should an electromagnet be to elevate a 1kg mass?

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Discussion Overview

The discussion revolves around determining the strength required for an electromagnet to elevate and hold a 1 kg mass within a ferrous environment, specifically within a steel cube. Participants explore the feasibility of achieving this goal and the implications of the cube's dimensions and material properties on the electromagnet's effectiveness.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant asks how strong an electromagnet needs to be to lift a 1 kg weight in a ferrous environment, questioning the feasibility of this task.
  • Another participant seeks clarification on the term "in the middle of a ferrous environment," indicating a need for more specific details.
  • Several participants discuss the dimensions of a steel cube and the implications of its thickness on the electromagnet's performance, with one estimating the weight of the cube's sides and suggesting it may exceed 60 kg.
  • Another participant corrects the weight estimation, noting that the density of iron is around 8 g/cm³, leading to a revised estimate of approximately 80 kg per plate.
  • One participant emphasizes that the original question pertains to lifting a mass inside the cube rather than the entire structure, suggesting that the thickness and material of the plates will influence the electromagnetic field.
  • A participant provides a link to a search for electromagnets capable of lifting 1 kg, implying that practical examples exist.
  • Another participant mentions security door mag-locks as a related application of electromagnets on a larger scale.

Areas of Agreement / Disagreement

Participants express differing views on the weight of the steel cube and its relevance to the electromagnet's strength. There is no consensus on the exact requirements for the electromagnet, and the discussion remains unresolved regarding the feasibility of the task.

Contextual Notes

Participants highlight assumptions regarding the density of materials and the specific conditions under which the electromagnet would operate. The discussion does not resolve the mathematical implications of these factors.

Arturas Surblys
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Hello Everybody,

Can somebody help me to find out about Electromagnets and Electric motors? I hope that here it is possible to get an expert opinion about the next question. How strong should be electromagnet to elevate and hold f.e. 1 kg weight in the middle of a ferrous environment (f.e. cube 1mx1mx1m), steel thickness 10 mm. Is it possible to achieve this target or is it totally unreachable?
 
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Arturas Surblys said:
Hello Everybody,

Can somebody help me to find out about Electromagnets and Electric motors? I hope that here it is possible to get an expert opinion about the next question. How strong should be electromagnet to elevate and hold f.e. 1 kg weight in the middle of a ferrous environment (f.e. cube 1mx1mx1m), steel thickness 10 mm. Is it possible to achieve this target or is it totally unreachable?
Can you send a diagram?
 
Do you mean something like this?

lifting-electro-magnet-old-car-260nw-433342318.jpg


I don't know what you mean by
in the middle of a ferrous environment
 

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For example steel cube with W1000xH1000xL1000 mm. each side is 10mm thickness steel and inside is electromagnets to hold 1 kg weight. Diagramm is attached.
 

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Arturas Surblys said:
For example steel cube with W1000xH1000xL1000 mm. each side is 10mm thickness steel and inside is electromagnets to hold 1 kg weight. Diagramm is attached.

please don't make people open pdf files always just upload the image

upload_2019-3-8_11-58-10.png
from your measurements, I suspect you have seriously underestimated the weight

each side will be well over 1kg ... 1m x 1m x 10mm ... without looking online for a calculator, you are probably close to 10kg per side
10 x 6 sides there's 60kg as an estimateDave
 

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100 cm×100 cm×1 cm =10000 cm3. 10 kg per side would be for water at 1 g/mL. Iron density is a bit below 8 g/cm3, so close to 80 kg per plate.

But I guess it doesn't matter, as far as I understand OP doesn't want to elevate everything, but some other mass inside of the cube.
 
Borek said:
100 cm×100 cm×1 cm =10000 cm3. 10 kg per side would be for water at 1 g/mL. Iron density is a bit below 8 g/cm3, so close to 80 kg per plate.

But I guess it doesn't matter, as far as I understand OP doesn't want to elevate everything, but some other mass inside of the cube.
Yes you are wright. It is nothing to do with the cube, just to show the environment. I believe thickness of plates and material will affect the electromagnetic field.
 
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On a bigger, yet not 'industrial' scale, think security door mag-locks...
 

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