What is the different gravitational force of the nine
Planets?

Have you tried to use Google first?

For mercury, this is what I got: Gravity on Mercury | Universe Today (http://www.universetoday.com/14014/gravity-on-mercury/)

Hence, the acceleration use to gravity can be obtained by taking 38% of that of the Earth.

I'm sure that you can get the gravity of other planets using Google.