Suppose that we take the mean radius of the Earth-Sun orbit as the unit of length, the mass of the Earth as the unit of mass, and a year as the unit of time. Convert the gravitational constant, G, into these units. What is the force of attraction between the Earth and the Moon in these units? Between the Earth and the Sun? [Pencil] 1 AU = 1.496 10 m 1ME = 5.98 104 kg lyr = 3.156 107 STX 107 s G = 6.67 x 10 -11 kg s FME = G MMME TME ME AU yr - 0.23-