Why Do Neutral and Charged Objects Attract?

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    Coulomb's law Law
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SUMMARY

The discussion centers on the phenomenon of attraction between a charged aluminum foil ball and a neutral aluminum foil ball, despite Coulomb's law suggesting no interaction due to the neutral charge. The experiment demonstrated that electrostatic induction occurs, where the charged ball induces an opposite charge on the neutral ball, leading to attraction. Factors such as humidity were acknowledged as potential influences, but the core principle of electrostatic induction was confirmed as the reason for the observed attraction.

PREREQUISITES
  • Understanding of Coulomb's Law and its formula: F = k(q1*q2/r^2)
  • Knowledge of electrostatic induction and its principles
  • Familiarity with basic concepts of charge (positive and negative)
  • Awareness of environmental factors affecting electrostatics, such as humidity
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  • Research the principles of electrostatic induction in detail
  • Explore experiments demonstrating Coulomb's Law with charged and neutral objects
  • Learn about the effects of humidity on electrostatic interactions
  • Investigate applications of electrostatic induction in real-world scenarios
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Students in physics, educators teaching electrostatics, and anyone interested in understanding the principles of charge interactions and electrostatic phenomena.

Trollscience
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We were doing an experiment today and we had 2 aluminum foil balls hang next (but not touching) to each other. Both were initially grounded then we charged one of them while the other remained neutral. We observed an attraction between them but coulomb's law states that:

F = k(q1*q2/r^2). If one ball was neutral (zero charge) then it should result with no attraction nor repulsion. I realize that this experiment may have other influencing factors such as humidity but theoretically this assumption should be true right?
 
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Do you know electrostatic induction?

This results in an opposite charge induced on the neutral ball, from the charged one, resulting in attraction.
 

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