Question

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.


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?

Answer 1

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.