How I make a "baloon" object?

Solar2D General Questions/Discussion
#1

I want to make a object float…

Since Corona uses Box2D, I went for the default Box2D way of doing it:
applyForce(-1 * objectMass * gravityAcceleration)
Corona SDK exposes gravity acceleration, but not the object mass… So… how I do it? Anyone have a clue on how I get the mass of a object in Corona SDK? [import]uid: 138716 topic_id: 26396 reply_id: 326396[/import]