I NEED HELP.... I look in my text for an inverse square law and i get G=M1M2/d^2, But im not given a two masses.

Question

The repusive force between two ceramic magnets was measured and found to depend on distance, as given in the table.

Separation, d (mm)          Force,F (N)
     10                           3.93
     12                          0.40
     14                          0.13
     16                          0.057
     18                          0.030
     20                          0.018
     22                          0.011
     24                          0.0076
     26                          0.0053
     28                          0.0038
     30                          0.0028

B. Does the force follow an inverse square law?

bobpursley · Answer

Try this law: Force= k /distance^2

see if you can find k.
k= force*distance^2

Make a third column on your table above, k column. It will be the first column squared, times the second column.

If k remains a constant (or nearly so), you have an inverse square law.