Minimum Force of Attraction Between Magnets for Humans

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Discussion Overview

The discussion revolves around the minimum force of attraction between two magnets that a human can perceive. Participants explore whether there is a specific threshold or formula for this force, considering various scenarios of interaction.

Discussion Character

  • Exploratory
  • Conceptual clarification

Main Points Raised

  • Some participants inquire about the minimum force required for a human to feel the attraction between magnets, suggesting a need for a formula or specific measurement.
  • One participant notes that the perception of attraction may depend on the body part to which the magnets are attached.
  • Another participant specifies a scenario involving holding a magnet near a fridge, questioning the necessary force for attraction to be felt.
  • A later reply suggests that there is no established formula for this force, emphasizing that humans are more sensitive to changes in pressure rather than constant forces.

Areas of Agreement / Disagreement

Participants generally agree that the perception of magnetic attraction is subjective and may vary based on context, but no consensus is reached on a specific minimum force or formula.

Contextual Notes

Limitations include the lack of defined parameters for measuring the force and the subjective nature of human perception regarding force sensitivity.

Who May Find This Useful

Individuals interested in magnetism, human sensory perception, or experimental physics may find this discussion relevant.

prse243
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Hi,

Is it known what is the minimum force of attraction between two magnets needed for a human being to feel an attraction pull between the magnets? or is there a formula for that?

Thanks!
 
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prse243 said:
Is it known what is the minimum force of attraction between two magnets needed for a human being to feel an attraction pull between the magnets?
Depends to which body parts you attach the magnets.
 
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just if you hold the magnet with your hand, for example a magnet attracted to a fridge; what is the force that needs to exist between the magnet and the fridge for you to feel they are attracting each other
 
prse243 said:
Is it known what is the minimum force of attraction between two magnets needed for a human being to feel an attraction pull between the magnets? or is there a formula for that?

There's no formula - you're just asking what the weakest force a human can feel is. We're much more sensitive to changes in pressure than to either constant pressures or forces: If there's a spider resting on the palm of your hand, you'll be able to feel it picking up one leg, even though the change in force is minuscule.
 
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Thanks!
 

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