1. Io is one of Jupiter's moons discovered by Galileo in 1610. it has a radius of 1.82 x 10^3 km. The mass of Io is 8.93 x 10^22 kg and the mass of Jupiter is 1.90 x 10^27 kg. The distance between the centres of Io and Jupiter is 4.22 x 10^8 m a) calculate the magnitude of the gravitational force of attraction that Jupiter exerts on Io. b) calculate the magnitude of the gravitational field strength on the surface of Io 2. On the surface of Titan, a moon of Saturn, the gravitational field strength has a magnitude of 1.3 N/kg. The mass of titan is 1.3 x 10^23 kg. What is Titans radius