How do mass and weight relate to each other?

Answer 1

W=mg ... where g is the gravitational acceleration

Answer 2

Weight is a measure of Mass within an established gravitational field. My Mass times acceleration due to Earth's gravity equates to a weight of about 200 pounds.

If I was on the Moon my mass would not have changed. My mass is the same but the gravitational field is different. My mass times acceleration due to the Moon's gravity would be equatible to about 35 pounds if I recall correctly.