box2d different gravity for shape

someone can explain to me how having two “shape with different gravity” in the same world in Box2D?

i think you can modify the density of each body or the friction so they response in a different way from the same gravity force…

Thanks so much.
I guess I have to play with:
setPhysics();
addForce();

I make some tests, thanks again.

Dario

this object looks prometedor, has a density and a friction public property, so you can set those values when create the object

@pandereto thank you very much for your answers!
I finally had to go because the bullet and change something in the project.

Thanks again.