Gravity: Jupiter's moon Europa orbits in 3.55 days and has an average orbital radius of 6.71 x 10^8 m; the mass of Europa is of 4.80 x 10^22 kg. Note: the gravitational constant G = 6.67 x 10^-11 Nm^2/kg^2
a. Calculate the mass of Jupiter.
b. Europa has a radius of 1.56 x 10^6 m. What would be the acceleration due to its gravity on the surface (g_Europa); how does it compare to g on earth?
c. (if time permits/do last) Io, another moon of Jupiter, has a period T of 1.77 days, what is its orbital radius?