What factors could alter electrostatic force?

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SUMMARY

The discussion centers on the investigation of factors affecting electrostatic force as described by Coulomb's Law. A graph of F-1/2 versus distance (r) was created, revealing a steeper gradient than expected. The experiment involved varying the distance between a charged sphere and an earthed plate, with measurements taken using a force meter. The discrepancy in the graph's gradient suggests potential influences on electrostatic force that warrant further exploration.

PREREQUISITES
  • Understanding of Coulomb's Law and electrostatic force
  • Familiarity with graphing techniques in physics
  • Experience with force measurement tools, specifically force meters
  • Knowledge of experimental design and data analysis
NEXT STEPS
  • Investigate factors affecting electrostatic force, including charge magnitude and distance
  • Learn about graphing techniques for physics experiments
  • Explore advanced concepts in electrostatics, such as electric field strength
  • Review experimental error analysis to understand discrepancies in results
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Physics students, educators, and researchers interested in electrostatics and experimental physics will benefit from this discussion.

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While investigating Coulomb's Law, I created a graph of F-1/2 vs. r to display results.

The gradient of this graph is much steeper than it should be. What factors could affect the electrostatic force to make this happen?

Any suggestions would be greatly appreciated!

(The experiment was to vary the distance between a charged sphere and earthed plate, and measure the force between them using a force meter. Note: The graph does not display exactly r on the x-axis, but something slightly more complex. However, it represents the same thing so for this question I just left it as r for simplicity).
 
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Any chance you could attach the graph to a post?
 
Drakkith said:
Any chance you could attach the graph to a post?

No problem - attached. The dashed line shows what the gradient should look like.
 

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    Graph.jpg
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