An object weighs 30 n on earth. a second object weighs 30 n on the moon. which has the greater mass? question 15 options: the one on the moon the one on earth not enough information to say they have the same mass.

Earth gravity = 9.8 m/s²

Moon gravity = 1.6 m/s²

Weight = (mass) x (gravity)

Divide each side by (gravity) and then it says:

Mass = Weight / gravity

Object on Earth:  Mass = (30N) / (9.8 m/s²)  =  3.06 kg

Object on Moon:  Mass = (30N) / (1.6 m/s²)  =  18.52 kg

If two objects have the same weight on Earth and on the Moon, then the one on the Moon must have more mass.  Six times as much mass, in fact.

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