(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In the course of performing several trials I determined that if you have 2 charged metal spheres (with the same amount of charge on them) and they are both positively charged, then the force of repulsion between them is changed by 1/4 each time you double the distance between them.

This experiment no doubt sounds very familiar as it has been done many times before.

I collected my data (16N@1.0cm, 4N@2.0cm, 1N@4.0cm, and 0.25N@8.0cm) and graphed it and of course I end up with a classic looking descending, concave looking graph which is the inverse square graph, I think.

2. Relevant equations

Now I have been puzzling over this for quite a while and even asked my boss and some co-workers to help and even together we can not figure it out - the question is:

"manipulate the data so that the graph is a straight line graph"

3. The attempt at a solution

I have tried doubling the charge, halving the distance, square rooting the distance, etc.

It always seems to end up with the same shape.

I think I might be missing the fundamental lesson here. Hopefully someone here can offer some insight.

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# Manipulating inverse square graph into straight line graph

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