The gravity on a planet or moon depends on the mass of the object and its size. The moon is much less massive than the earth, so the gravity is smaller. On jupiter it would be much larger the gravity due to its higher mass. This is known as Newton’s law, named after Isaac Newton who discovered it in the 17th century.
Comments
Ayayai commented on :
Oh I see the smaller the size it is the less strong Gravity it is and the larger the size it is the more strong gravity it has.
Lily commented on :
Excellent question Ayayai
Sensational response Chris