Hey there,
Will is a scientist. He’s designing a spacecraft that would allow people to land on Mars. Will’s mass on Earth is 75 kilograms.
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 to 75 kilograms. His weight on Mars will be lesser than his weight on Earth.
This would be because sense Will know that the gravitational pull of Mars is less than the gravitational pull of Earth, this would result in having his mass to be greater than 75 kilograms and for his weight to be lesser than.
Hope this helps