Question

Will knows that the gravitational pull of Mars is less than the gravitational pull of Earth. When he lands on Mars, his mass will be greater than or equal to 75kilograms?

Answer 1

mass is the fundamental property of a matter ! so it doesn't change!

so answer is equal to !

but this doesn't mean that mass doesn't change at all...if you remember E= mc2 ....mass can change but only when it travels with speed !

Answer 2

Mass of an object/person remains same, doesn't depend on gravity, so if his mass is 75 Kg somewhere, then, it would remain same everywhere. Only Weight of a person changes with gravity.

In short, Your Answer would be "Equal to 75 Kg"

Hope this helps!