Answer;
=5.8 kg , same as the mass on the earth's surface
Explanation;
The gravitational force on the earth surface is 9.8 N/kg
Therefore; a box weighing 56.84 N will have a mass of;
= 56.84 /9.8
=5.8 kg
The box weighs 5.8 kg on the earth surface.
On the moon's surface the box would still weigh 5.8 kg , this is because the mass of an object or a substance is constant everywhere.
-Mass of a body is constant or remains the same everywhere irrespective of the gravitational force, unlike the weight which varies depending on the pull of gravity of a place.