Respuesta :

The weight of anything is determined on how much gravity is pulling on the object. For example a balloon full of helium floats away but iron or concrete would fall to the ground. hope this helps :)
AL2006

There's not much to go on in the question.  There are lots of things that vary with gravitational force.  

Maybe the simplest, most common one is ' weight '.  In fact, weight IS gravitational force.