(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.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Manipulating inverse square graph into straight line graph

**Physics Forums | Science Articles, Homework Help, Discussion**