Fnord wrote:
magz wrote:
I'm thinking in kilograms...
That would be mass, not weight.
For instance, my mass is about 91 kg, while my weight is about 200 pounds.Mass is the amount of physical matter in an object.
Weight whether measured in kilograms or pounds is the amount of force from it due to gravity.
An object that is at rest (not moving) at sea level on earth will have the same mass and also weight.
Take the same object into space where the gravitational forces are different - the mass will be the same but the weight different. Indeed an object at rest where there are no gravitational forces has no weight!