The force of gravity between Jupiter and Ganymede, the largest of Jupiter's moons, is determined by the gravitational attraction between the two bodies. The strength of this force depends on the mass of the two bodies and the distance between them.
Jupiter is much more massive than Ganymede, with a mass about 318 times that of Earth, while Ganymede has a mass of about 0.025 Earth masses. The distance between Jupiter and Ganymede varies depending on their positions in their respective orbits, but on average it is about 1,070,000 km.
Using the formula for the force of gravity, F=GmM/r^2, we can calculate that the force of gravity between Jupiter and Ganymede as about 1.8 x 10^22 N (Newtons)
